Kobayashi's orchard harvested 310 kilograms of pears, and 13 times more apples than pears. How many kilograms more apples than pears?
小林家果园收了310千克梨，收的苹果是梨的13倍，苹果比梨多多少千克？
<gadget id="calculator">310 * 13</gadget>
<output>4_030</output>

<gadget id="calculator">4_030 - 310</gadget>
<output>3_720</output>

<result>3_720</result>