A pile of coal is planned to burn 45 kilograms per day, and it can be burned for 32 days. Due to saving coal, it actually burns for 36 days. How many kilograms of coal is actually burned per day?
一堆煤，计划每天烧45千克，可以烧32天，由于节省用煤，实际烧了36天，实际每天烧煤多少千克？
<gadget id="calculator">32 / 36</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">45 * (8/9)</gadget>
<output>40</output>

<result>40</result>