A truckload of coal was brought from the school cafeteria. It was originally planned to burn 0.25 tons per day, which can last for 24 days. Now that the boiler technology has been improved, 0.05 tons can be saved every day. Now, how many days can this truckload of coal burn?
学校食堂运来一车煤，原计划每天烧0.25吨，可以烧24天，现在改进锅炉技术，每天节约0.05吨，现在，这车煤可以烧多少天？
<gadget id="calculator">0.25 - 0.05</gadget>
<output>0.2</output>

<gadget id="calculator">24 / 0.2</gadget>
<output>120</output>

<gadget id="calculator">0.25 * 120</gadget>
<output>30</output>

<result>30</result>