251除以39的商是(6.43)251÷39≈6.43403÷47的商是(8.57)403÷47≈8.57
解:403÷8等于( 50.375 ) ∵已知需求出403÷8等于多少 X ÷ Y = X / Y = Z ∴403 ÷ 8 = 403 × 1/8 = 403/8 = 50.375 答:403÷8等于50.375