40 : 8 + 2 * 100 = 5 + 200 = 205
40 : (8 + 2) * 100 = 40 : 10 * 100 = 4 * 100 = 400
(40 : 8 + 2) * 100 = (5 + 2) * 100 = 7 * 100 = 700
100 − (40 + 36) : 4 = 100 − 4 : 4 = 100 − 1 = 99
(100 − 40 + 36) : 4 = (60 + 36) : 4 = 96 : 4 = 24
100 − (40 + 36 : 4) = 100 − (40 + 9) = 100 − 49 = 51
900 : 9 − 6 * 10 = 100 − 60 = 40
600 : 100 + 50 * 10 = 6 + 500 = 506
70 * 5 + 3 * 100 = 350 + 300 = 650