The cafeteria brought in a batch of coal, and planned to burn 0.3 tons per day, which can last for 20 days. If it burns 0.25 tons per day, how many days can it burn?
食堂运进一批煤，计划每天烧0.3吨，可以烧20天，如果每天烧0.25吨，能烧多少天？
<gadget id="calculator">20 / 0.25</gadget>
<output>80</output>

<gadget id="calculator">0.3 * 80</gadget>
<output>24</output>

<result>24</result>