A TV factory trial-produces a batch of new products. It originally planned to produce 40 sets per day, and it took 30 days to complete the production. The actual daily production increased by 25% compared with the plan. How many days did it take?
电视机厂试制一批新产品，原计划每天生产40台，30天完成，实际每天比计划增产25%，实际多少天完成？
<gadget id="calculator">40 * 30</gadget>
<output>1_200</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">40 * (5/4)</gadget>
<output>50</output>

<gadget id="calculator">1_200 / 50</gadget>
<output>24</output>

<result>24</result>