a) 89132 - (4365 - 1823) * 5 = 89132 - (2542 * 5) = 89132 - 12710 = 76422, b) 3645 * 63 + 5508 : 17 = 229635 + 324 = 229959, c) 3708 + (115810 - 1234) : 6 = 3708 + 114576 : 6 = 3708 + 19096 = 22804, d) 78084 + 324 : 312 - 74192 : 928 = 78084 + 1 - 80 = 78005.