diff --git a/Day-20/Gaaanesh.py b/Day-20/Gaaanesh.py
new file mode 100644
index 0000000..d0a439b
--- /dev/null
+++ b/Day-20/Gaaanesh.py
@@ -0,0 +1,37 @@
+def greet(name):
+    
+    def message():
+        return "How u doin :)!"
+
+    return f"Sup, {name}. {message()}"
+name=input("Enter you name:")
+print(greet(name))
+
+
+def calculator(a, b):
+    def add():
+        return a + b
+
+    def subtract():
+        return a - b
+
+    def multiply():
+        return a * b
+
+    def divide():
+        return a / b if b != 0 else "Division by zero!"
+
+    return {
+        "add": add(),
+        "subtract": subtract(),
+        "multiply": multiply(),
+        "divide": divide()
+    }
+
+a=int(input("Enter a number:"))
+b=int(input("Enter a number:"))
+results = calculator(a,b)
+print("Addition:", results["add"])        
+print("Subtraction:", results["subtract"]) 
+print("Multiplication:", results["multiply"])
+print("Division:", results["divide"])    
\ No newline at end of file