The fruit shop brings in 39 boxes of fruit, each weighing 15 kg. 286 kilograms are sold, how many kilograms are left?
水果店运进39箱水果，每箱重15千克．卖出286千克，还剩多少千克？
<gadget id="calculator">15 * 39</gadget>
<output>585</output>

<gadget id="calculator">585 - 286</gadget>
<output>299</output>

<result>299</result>