The fruit shop brings 4 carts of apples, each of which weighs 800 kilograms, and sells 2500 kilograms. How many kilograms of apples are left?
水果店运来4车苹果，每车800千克，卖出了2500千克，还剩多少千克苹果？
<gadget id="calculator">4 * 800</gadget>
<output>3_200</output>

<gadget id="calculator">3_200 - 2_500</gadget>
<output>700</output>

<result>700</result>