A primary school transported 3,600 kilograms of coal, originally planned to burn for 50 days, but actually burned for 36 days, how many kilograms of coal was less than the original plan?
某小学运来3600千克煤，原计划烧50天，实际烧36天，实际每天比原计划少煤多少千克？
<gadget id="calculator">3_600 / 36</gadget>
<output>100</output>

<gadget id="calculator">3_600 / 50</gadget>
<output>72</output>

<gadget id="calculator">100 - 72</gadget>
<output>28</output>

<result>28</result>