The cafeteria transports a batch of coal. It is planned to burn 0.3 tons per day, which can be burned for 20 days. The actual saving is 0.05 tons per day. How many days can it actually be burned?
食堂运进一批煤，计划每天烧0.3吨，可以烧20天，实际每天节约0.05吨，实际能烧多少天？
<gadget id="calculator">0.3 - 0.05</gadget>
<output>0.25</output>

<gadget id="calculator">20 / 0.25</gadget>
<output>80</output>

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

<result>24</result>