The chemical fertilizer factory needs to produce a batch of chemical fertilizers. It was originally calculated to produce 3.6 tons per day, which can be completed in 25 days. The task was actually completed 5 days ahead of schedule. How many tons of chemical fertilizers are actually produced per day?
化肥厂要生产一批化肥，原计算每天生产3.6吨，25天可以完成，实际提前5天完成了任务，实际每天生产化肥多少吨？
<gadget id="calculator">25 - 5</gadget>
<output>20</output>

<gadget id="calculator">25 / 20</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">3.6 * (5/4)</gadget>
<output>4.5</output>

<result>4.5</result>