The fruit shop ships 20 boxes of apples and 20 pears each, each box of apples weighs 16 kg, and each box of pears weighs 24 kg. How many kilograms are the apples and pears delivered in total?
水果店运来苹果和梨各20箱，每箱苹果16千克，每箱梨24千克．运来苹果和梨一共多少千克？
<gadget id="calculator">16 + 24</gadget>
<output>40</output>

<gadget id="calculator">40 * 20</gadget>
<output>800</output>

<result>800</result>