Defined add, subtract, multiply, and divide functions; added a print line

calculator.py

@@ -1,16 +1,15 @@
-def multiply(a,b):
-    return a * b
-
-def add(a,b):
-	return a+b
-
-def subtract(a,b):
-	return a-b
-
-def divide(a,b):
-	return a/b
-
-
-print("I'm going use the calculator functions to multiply 5 and 6")
-x = multiply(5,6)
-print(x)
+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):
+	return a / b
+
+print("I'm going use the calculator functions to divide 30 by 6")
+x = divide(30,6)
+print(x)