iOS Calculator Example
How to use
AC or C
Clear the last input
+/-
Assign the additive inverse
%
Find the 1% of the last input
÷
Division operator
x
Multiplication operator
-
Minus operator
+
Plus operator
=
Equals operator
0
AC
+/-
%
÷
7
8
9
x
4
5
6
-
1
2
3
+
0
,
=