LITE
-> PRO
C
x
2
x
y
lg
x
7
8
9
×
÷
4
5
6
+
–
1
2
3
+/-
%
0
.
PRO
=
C
PRO
+/-
÷
7
8
9
×
4
5
6
–
1
2
3
+
0
.
=
©
silversky