42 40 + 2 (44.44 - 2.44) (21 * 2.0) (84.0 / (3-1)) 88 / 2 - 2 88 / (8 / 4) - 2 44.0 - 2 (4 * 11.0) - 2 (8 * 11.0) / 2 - 2 (8 * 11.0) / (8 / 4) - 2