解:180÷7约等于( 25.71 ) ∵已知需求出180÷7等于多少 X ÷ Y = X / Y = Z ∴180 ÷ 7 = 180 × 1/7 = 180 / 7 = 25.71428571 ≈ 25.71 答:180÷7约等于25.71