There are 520 kilograms of apples in the store, which is 40 kilograms more than three times that of pears. How many kilograms of pears are there?
商店有苹果520千克，比梨的3倍还多40千克，梨有多少千克？
<gadget id="calculator">520 - 40</gadget>
<output>480</output>

<gadget id="calculator">480 / 3</gadget>
<output>160</output>

<result>160</result>