A fruit shop has 5 boxes of oranges, each weighing 20 kg. The weight of a pear is 4 times that of an orange. How many kilograms of pears are there in the fruit shop?
水果店有5箱桔子，每箱重20千克．梨的重量是桔子的4倍，水果店有梨多少千克？
<gadget id="calculator">20 * 5 * 4</gadget>
<output>400</output>

<result>400</result>