The fruit shop shipped 36 boxes of fruit, each weighing 15 kg. How many kilograms are left after selling 285 kilograms?
水果店运来水果36箱，每箱重15千克．卖出285千克后，还剩多少千克？
<gadget id="calculator">36 * 15</gadget>
<output>540</output>

<gadget id="calculator">540 - 285</gadget>
<output>255</output>

<result>255</result>