用簡便方法計算：57.6×1.6+28.8×36.8-14.4×80.

57.6×1.6+28.8×36.8-14.4×80=57.6×1.6+28.8×2×18.4-14.4×4×20=57.6×1.6+57.6×18.4-57.6×20=57.6×（1.6+18.4-20）=0