The fruit wholesaler brings in 136 boxes of apples, each weighing 25 kilograms. After selling 2740 kilograms, how many kilograms are left?
水果批发店运进136箱苹果，每箱25千克，卖出2740千克后，还剩下多少千克？
<gadget id="calculator">25 * 136</gadget>
<output>3_400</output>

<gadget id="calculator">3_400 - 2_740</gadget>
<output>660</output>

<result>660</result>