Ordinary Calculator Examples

Problem	Input	Display
15 + 3.5 - 3.2 = 15.3	15 [+] 3.5 [-] 3.2 [=]	15.3
32 x 5.4 ÷ 41.2 = 4.19417475	32 [x] 5.4 [÷] 41.2 [=]	4.19417475
3.54 x (-3) = -10.62	[ON/AC] 3.54 [x] 3 [+/-] [=]	-10.62