The store shipped 500 kg of apples and 500 kg of pears each, 20 kg of apples per carton, and 25 kg of pears per carton, how many more cartons of apples than pears?
商店运来苹果和梨各500千克，苹果每箱20千克，梨每箱25千克，苹果比梨多几箱？
<gadget id="calculator">500 / 20</gadget>
<output>25</output>

<gadget id="calculator">500 / 25</gadget>
<output>20</output>

<gadget id="calculator">25 - 20</gadget>
<output>5</output>

<result>5</result>