diff --git a/src/main/java/Calculator.java b/src/main/java/Calculator.java
new file mode 100644
index 00000000..967c70a4
--- /dev/null
+++ b/src/main/java/Calculator.java
@@ -0,0 +1,25 @@
+import java.util.Scanner;
+public class Calculator {
+    public static void main(String[] args) {
+        //여기서부터 프로그램 시작
+        System.out.println("[전서영] 1주차 계산기 구현 과제");
+        // Scanner 객체 생성
+        Scanner scanner = new Scanner(System.in);
+
+        // 숫자 입력받기
+        System.out.println("Please enter the numbers. : ");
+        String expression = scanner.nextLine();
+
+        // 쉼표와 콜론으로 숫자들 분리
+        String[] tokens = expression.split("[,|:]");
+
+        int sum = 0;
+        for (String token : tokens) {
+            sum += Integer.parseInt(token);
+        }
+
+        System.out.println("Results: " + sum);
+
+        scanner.close();
+    }
+}
\ No newline at end of file