factory shipped a batch of coal, originally planned to burn 0.5 tons per day, which can be burned for 30 days. Actually burn 10 days more, how many tons are actually burned per day?
某厂运来一批煤，原计划每天烧0.5吨，可以烧30天．实际多烧10天，实际每天烧多少吨？
<gadget id="calculator">0.5 * 30</gadget>
<output>15</output>

<gadget id="calculator">30 + 10</gadget>
<output>40</output>

<gadget id="calculator">15 / 40</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>