The boiler room purchased a batch of coal and planned to burn 45 kg per day for 26 days. In fact, it burned for 30 days, how many kilograms was burned on average per day?
锅炉房购买了一批煤，计划每天烧45千克，可以烧26天．实际上烧了30天，平均每天烧多少千克？
<gadget id="calculator">26 / 30</gadget>
<output>13/15 = around 0.866667</output>

<gadget id="calculator">45 * (13/15)</gadget>
<output>39</output>

<result>39</result>