解:7/8×17/5×17/2等于( 2023/80 ) ∵已知需求出7/8×17/5×17/2等于多少 ∴7/8 × 17/5 × 17/2 = (7/8 × 17/5)× 17/2 = 119/40 × 17/2 = (119×17)/(40×2) = 2023/80 答:7/8×17/5×17/2等于2023/80