The school cafeteria bought 27 tons of coal and planned to burn it for 30 days. Actually burn 0.15 tons less than planned every day, how many days can these coals be burned?
学校食堂买煤27吨，计划烧30天．实际每天比计划少烧0.15吨，这些煤可以烧多少天？
<gadget id="calculator">27 / 30</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(9/10) - 0.15</gadget>
<output>0.75</output>

<gadget id="calculator">27 / 0.75</gadget>
<output>36</output>

<result>36</result>