There are 52 baskets of apples in the fruit shop, each weighing 40 kilograms, 22 baskets have been sold, how many kilograms are left?
水果店有52筐苹果，每筐重40千克，已经卖出22筐，还剩多少千克？
<gadget id="calculator">52 - 22</gadget>
<output>30</output>

<gadget id="calculator">30 * 40</gadget>
<output>1_200</output>

<result>1_200</result>