The fruit shop shipped 30 baskets of citrus, each weighing 23 kilograms. After selling 10 baskets, how many kilograms are left?
水果店运来柑橘30筐，每筐重23千克，卖掉10筐后，还剩多少千克？
<gadget id="calculator">30 - 10</gadget>
<output>20</output>

<gadget id="calculator">20 * 23</gadget>
<output>460</output>

<result>460</result>