diff --git a/Calculator.java b/Calculator.java
new file mode 100644
index 0000000..efe6e0e
--- /dev/null
+++ b/Calculator.java
@@ -0,0 +1,13 @@
+public class Calculator {
+    public int add(int a, int b) { return a + b; }
+    public int subtract(int a, int b) { return a - b; }
+    public int multiply(int a, int b) { return a * b; }
+    public int modulus(int a, int b) {
+    return a % b;
+}
+
+    public double divide(int a, int b) {
+        if (b == 0) throw new ArithmeticException("Cannot divide by zero");
+        return (double) a / b;
+    }
+}
diff --git a/Student.java b/Student.java
new file mode 100644
index 0000000..e69de29