32 + 47 +23 + 38 = (32 + 38) + (47 + 23) = 70 +70 = 140
4 * 9 * 25 = 4 * 25 * 9 = 100 * 9 = 900
126 + 235 + 115 = 235 + 115 + 126 = 350 + 126 = 476
230 + 80 + 70 + 120 = (230 + 70) + (80 + 120) = 300 + 200 = 500
23 * 2 * 50 = 2 * 50 * 23 = 100 * 23 = 2300
25 * 50 * 4 * 2 = (25 * 4) * (50 * 2) = 100 * 100 = 10000