5 * 75 - 3 * 75 = 75 * (5 - 3) = 75 * 2 → произведение 75 и 2 [=150]
8 * 37 + 2 * 37 = 37 * (8 + 2) = 37 * 10 → произведение 37 и 10 [=370]
23 * 4 - 18 * 4 = 4 * (23 - 18) = 4 * 5 → произведение 4 и 5 [=20]
12 * 35 - 9 * 35 = 35 * (12 - 9) = 35 * 3 → произведение 35 и 3 [=105]