The fruit supermarket ships 1,000 kilograms of apples, sells 25 baskets, and each basket of apples weighs 35 kilograms. How many kilograms of apples are left in the supermarket?
水果超市运来1000千克苹果，卖出25筐，每筐苹果35千克，超市里还剩多少千克苹果？
<gadget id="calculator">25 * 35</gadget>
<output>875</output>

<gadget id="calculator">1_000 - 875</gadget>
<output>125</output>

<result>125</result>