The store shipped 16 baskets of pears, each 42.5Kg. The pears delivered are 120Kg less than twice the mass of apples. How many kilograms of apples are shipped?
商店运来16筐梨，每筐42.5Kg．运来的梨比苹果质量的2倍少120Kg．运来苹果多少千克？
<gadget id="calculator">16 * 42.5</gadget>
<output>680</output>

<gadget id="calculator">120 + 680</gadget>
<output>800</output>

<gadget id="calculator">800 / 2</gadget>
<output>400</output>

<result>400</result>