There are 28 boxes of apples in the fruit shop, and each box weighs 16 kilograms. After selling 18 boxes, how many kilograms are left?
水果店店有28箱苹果，每箱16千克，卖出18箱后，还剩多少千克？
<gadget id="calculator">28 - 18</gadget>
<output>10</output>

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

<result>160</result>