Limin Fruit Shop shipped 500 kilograms of peaches and sold 15 baskets, with an average of 20 kilograms per basket. How many kilograms of peaches are left?
利民水果店运来500千克桃，卖出了15筐，平均每筐20千克，还剩多少千克桃？
<gadget id="calculator">20 * 15</gadget>
<output>300</output>

<gadget id="calculator">500 - 300</gadget>
<output>200</output>

<result>200</result>