中二數.吾該你地:D

1 單利息 = 1000 * 10% * 2 = 2002 單利息 = 5400 * 5% * 5 = 13503 單利息 = 250000 * 7% * 0.5 = 87504 本利和 = 650 + 650 * 2% * 7 = 7415 本利和 = 23000 + 23000 * 3% * 7/3 = 246106 本利和 = 1800 + 1800 * 5.5% * 8/12 = 1866