4 * 5 = 20
4 * 53 = 4 * 125 = 500
(4 * 5)3 = 203 = 20 * 20 * 20 = 8000
82 + 32 = 64 + 9 = 73
(8 + 3)2 = 112 = 11 * 11 = 121
8 + 32 = 8 + 9 = 17
53 - 2 = 125 - 2 = 123
53 - 23 = 125 - 8 = 117
(5 - 2)3 = 33 = 3 * 3 * 3 = 27
3 * 72 - 25 = 3 * 49 - 25 = 147 - 25 = 122
56 + 3 * 92 = 56 + 3 * 81 = 56 + 243 = 299
43 + 3 * 52 - 26 = 64 + 3 * 25 - 64 = 64 + 75 - 64 = 75