The school shipped 400 kilograms of coal, and 88 kilograms remained after burning for 4 days. How many kilograms of coal are burned on average every day?
学校运来400千克煤，烧了4天还剩88千克，平均每天烧煤多少千克？
<gadget id="calculator">400 - 88</gadget>
<output>312</output>

<gadget id="calculator">312 / 4</gadget>
<output>78</output>

<result>78</result>