The store brings in 420 kilograms of pears, and after selling 80 kilograms, the rest is exactly 4 times the weight of apples. How many kilograms are apples?
商店运进梨420千克，卖出80千克后，剩下的正好是苹果重量的4倍，苹果有多少千克？
<gadget id="calculator">420 - 80</gadget>
<output>340</output>

<gadget id="calculator">340 / 4</gadget>
<output>85</output>

<result>85</result>