The fruit shop shipped 60 boxes of fruit, sold 44 boxes, and left 320 kilograms. How many kilograms does each box weigh.
水果店运来60箱水果，卖出了44箱，还剩下320千克．每箱重多少千克．
<gadget id="calculator">60 - 44</gadget>
<output>16</output>

<gadget id="calculator">320 / 16</gadget>
<output>20</output>

<result>20</result>