8 * 4 + (25 − 17) = 32 + 8 = 24
82 − 21 : 7 + 11 = 82 − 3 + 11 = 79 + 11 = 90
(13 − 8) * 6 : 10 = 5 * 6 : 10 = 30 : 10 = 3
42 : (31 − 8 * 3) = 42 : (31 − 24) = 42 : 7 = 6
(90 : 10 − 4) * 7 = (9 − 4) * 7 = 5 * 7 = 35
72 : (40 − 32) * 6 = 72 : 8 * 6 = 9 * 6 = 54
81 : 81 * 9 + 37 = 1 * 9 + 37 = 9 + 37 = 46
(39 − 39) * 100 + 36 : 6 = 0 * 100 + 6 = 6
(6 * 10 − 48) : 2 = (60 − 48) : 2 = 12 : 2 = 6