supermarket shipped 204 baskets of apples, each weighing 30 kg. Now sell 1780 kilograms, how many kilograms of apples are left?
某超市运来204筐苹果，每筐重30千克．现在卖出1780千克，还剩下多少千克苹果？
<gadget id="calculator">204 * 30</gadget>
<output>6_120</output>

<gadget id="calculator">6_120 - 1_780</gadget>
<output>4_340</output>

<result>4_340</result>