1maebr 20.250000 * 3.000000 + 10.500000 -> 71.250000 2madbr 42.750000 * -2.000000 + -10.500000 -> -96.000000 3msebr 20.250000 * 3.000000 - 10.500000 -> 50.250000 4msdbr 42.750000 * -2.000000 - -10.500000 -> -75.000000 5