Processing a batch of parts, if the work efficiency per minute is increased by 25%, then it takes 24 minutes less to complete this batch of parts. How many minutes was originally planned to process this batch of parts.
加工一批零件，如果每分钟的工作效率提高25%，那么，完成这批零件就少用了24分钟，原计划加工这批零件用多少分钟．
<gadget id="calculator">5 - 4</gadget>
<output>1</output>

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

<gadget id="calculator">24 * 5</gadget>
<output>120</output>

<result>120</result>