diff --git a/calculator.py b/calculator.py
new file mode 100644
index 0000000..e982054
--- /dev/null
+++ b/calculator.py
@@ -0,0 +1,18 @@
+# Program make a simple calculator
+
+# This function adds two numbers
+def add(x, y):
+    return x + y
+
+# This function subtracts two numbers
+def subtract(a, b):
+    return a - b
+    
+def mul(a,b):
+    return a*b
+
+def div(a,b):
+    return a/b
+
+
+