diff --git a/src/main/resources/static/res/front/js/biz/guest/add.js b/src/main/resources/static/res/front/js/biz/guest/add.js
index 2b2ad53..732af4a 100644
--- a/src/main/resources/static/res/front/js/biz/guest/add.js
+++ b/src/main/resources/static/res/front/js/biz/guest/add.js
@@ -29,7 +29,8 @@ let appVue = new Vue({
 		petName: '',
 		insertType: 'change',
 		usim: '0',
-		formula: ''
+		formula: '',
+		faceValueRebate: ''
     },
     mounted: function () {
         this.init();
@@ -47,14 +48,13 @@ let appVue = new Vue({
 			$(".money").on('blur', function(e){
 			    e.stopPropagation();
 			    e.stopImmediatePropagation();
-			    let value = e.target.value;
-				value = Number(value.replaceAll(',', ''));
-				if(isNaN(value)) {         //NaN인지 판별
-					e.target.value = 0;   
-			  	}else {                   //NaN이 아닌 경우
-			    	const formatValue = value.toLocaleString('ko-KR');
-			    	e.target.value = formatValue;
-			  	}
+				var value;
+				if(e.target.value < 100){
+			    	value = e.target.value*10000;
+				}else{
+					value = e.target.value;
+				}
+				e.target.value = $this.moneyText(value.toString());
 			});
 		},
         bindData: function () {
@@ -148,32 +148,36 @@ let appVue = new Vue({
 		formulaChange: function(e){
 			let $this = this; 
 			var result = 0;
-			var calc = e.target.value; //1+7+8-5-4+4 = 11
-			var calcList = calc.split('+');//1//7//8-5-4//4
-			calcList.forEach(function(num1, i){
-				if(num1.indexOf('-') == -1){ //only 숫자
-					result += parseInt(num1);
-					console.log("+"+num1);
-				}else{//빼기 8-5-4
-					num1.split('-').forEach(function(num2, j){
-						if(j==0 && i==0){
-							result =parseInt(num1);
-							console.log("="+num1);
-							j++;
-						}else if(j==0){
-							result +=parseInt(num2);
-							console.log("+"+num2);
+			var calc = e.target.value; //-1-2-3 = -6
+			var plusList = calc.split('+');//-1-2-3
+			
+			for(var i=0;i<plusList.length;i++){
+				if(plusList[i].indexOf('-') == -1){ //only 숫자
+					result += Number(plusList[i]);
+				}else{
+					var subList = plusList[i].split('-');//-1-2-3
+					for(var j=0;j<subList.length;j++){
+						if(subList[j] == '' && j == 0){
+							
+						}else if(subList[j] != '' && j == 0){
+							result +=Number(subList[j]);
+						}else{
+							result -=Number(subList[j]);
 						}
-						else{
-							result -=parseInt(num2);
-							console.log("-"+num1);
-						}
-					});
+					}	
 				}
-			});
-			
-			console.log(result);
-			
+			}
+			var value = result*10000;
+			$this.faceValueRebate = $this.moneyText(value.toString());
+		},
+		moneyText: function(value){
+			value = Number(value.replaceAll(',', ''));
+			if(isNaN(value)) {         //NaN인지 판별
+				 return 0;   
+		  	}else {                   //NaN이 아닌 경우
+		    	const formatValue = value.toLocaleString('ko-KR');
+		    	return formatValue;
+		  	}
 		}
     }
 });
\ No newline at end of file
diff --git a/src/main/webapp/WEB-INF/view/guest/add.jsp b/src/main/webapp/WEB-INF/view/guest/add.jsp
index 19c8510..aede186 100644
--- a/src/main/webapp/WEB-INF/view/guest/add.jsp
+++ b/src/main/webapp/WEB-INF/view/guest/add.jsp
@@ -38,7 +38,7 @@
 						    </div>
 						    <label for="mobileCarrier" class="col-sm-1 col-form-label mb-3 pt-3">통신사</label>
 						    <div class="col-sm-3 mb-3 pt-3">
-						    	<input type="text" readonly class="form-control" id="mobileCarrier" v-model="mobileCarrier" value="" tabindex="3">
+						    	<input type="text" readonly class="form-control" id="mobileCarrier" v-model="mobileCarrier" disabled="disabled" tabindex="3">
 						    </div>
 						</div>
 					</div>
@@ -143,9 +143,9 @@
 						    	<input type="text" class="form-control" id="formula" value="1+2+4+5+6-2" v-model="formula" @input="formulaChange">
 						    </div>
 						    <div class="vr p-0 m-0"></div>
-						    <label for="pname" class="col-sm-2 col-form-label mb-3 pt-3">액면R/B</label>
+						    <label for="faceValueRebate" class="col-sm-2 col-form-label mb-3 pt-3">액면R/B</label>
 						    <div class="col-sm-3 mb-3 pt-3">
-						    	<input type="text" class="form-control money" id="pname" readonly value="160000">
+						    	<input type="text" class="form-control money" id="faceValueRebate" v-model="faceValueRebate" disabled="disabled" value="160000">
 						    </div>
 						</div>