The fruit shop brings in 6 boxes of apples and 6 boxes of pears, each box of apples weighs 15.5 kg, and each box of pears weighs 12.5 kg. How many kilograms more apples than pears are shipped in?
水果店运进苹果和梨各6箱，每箱苹果重15.5千克，每箱梨重12.5千克．运进的苹果比梨多多少千克？
<gadget id="calculator">15.5 - 12.5</gadget>
<output>3</output>

<gadget id="calculator">3 * 6</gadget>
<output>18</output>

<result>18</result>