Added simple calculator script

Author: kaynzou

scripts/simple_calculator.py

@@ -0,0 +1,33 @@
+def add(a, b):
+    return a + b
+
+def subtract(a, b):
+    return a - b
+
+def multiply(a, b):
+    return a * b
+
+def divide(a, b):
+    if b == 0:
+        return "Error: Division by zero"
+    return a / b
+
+if __name__ == "__main__":
+    print("Simple Calculator")
+    x = float(input("Enter first number: "))
+    y = float(input("Enter second number: "))
+    op = input("Enter operation (+, -, *, /): ")
+
+    if op == '+':
+        print("Result:", add(x, y))
+    elif op == '-':
+        print("Result:", subtract(x, y))
+    elif op == '*':
+        print("Result:", multiply(x, y))
+    elif op == '/':
+        print("Result:", divide(x, y))
+    else:
+        print("Invalid operation!")
+
+
+