(146 + 322) + 178 = 468 + 178 = 646
784 + (179 + 116) = 784 + 295 = 1079
625 + 481 + 75 + 219 = 1106 + 75 + 219 = 1181 + 219 = 1400
427 + 88 + 273 + 112 = 515 + 273 + 112 = 788 + 112 = 900