A store brings in 30 boxes of apples and 20 boxes of pears, each weighing 16 kg. How much less pears are shipped than apples?
一个商店运进30箱苹果和20箱梨，每箱都重16千克．运来的梨比苹果少多少千克？
<gadget id="calculator">30 - 20</gadget>
<output>10</output>

<gadget id="calculator">10 * 16</gadget>
<output>160</output>

<result>160</result>