The cafeteria bought 2,800 kilograms of coal and burned it up in 20 days. How many kilograms of coal is burned on average every day?
食堂买来2800千克煤，20天正好烧完，平均每天烧多少千克煤．
<gadget id="calculator">2_800 / 20</gadget>
<output>140</output>

<result>140</result>