The school cafeteria brought 1,200 kilograms of coal and burned it for 16 days, leaving 480 kilograms. How many kilograms of coal is burned on average per day?
学校食堂运来1200千克煤，烧了16天，还剩480千克．平均每天烧煤多少千克？
<gadget id="calculator">1_200 - 480</gadget>
<output>720</output>

<gadget id="calculator">720 / 16</gadget>
<output>45</output>

<result>45</result>