There are 75 kilograms of flour in the supermarket, and after selling 7 bags, there are 40 kilograms left. How many kilograms does each bag of flour weigh?
超市有75千克面粉，卖出7袋以后，还剩40千克．每袋面粉重多少千克？
<gadget id="calculator">75 - 40</gadget>
<output>35</output>

<gadget id="calculator">35 / 7</gadget>
<output>5</output>

<result>5</result>