There are two boxes of goods A and B weighing 24.72 kg in total, and box A weighing 15.3 kg. How much is box A heavier than box B?
有甲、乙两箱货物共重24.72千克，甲箱重15.3千克．甲箱比乙箱重多少干克？
<gadget id="calculator">24.72 - 15.3</gadget>
<output>9.42</output>

<gadget id="calculator">15.3 - 9.42</gadget>
<output>5.88</output>

<result>5.88</result>