Dad wants to process a batch of parts, and he plans to process 24 parts per day, which can be completed on time. Now the construction period is required to be shortened by 20%, so how many parts does Dad need to process every day to meet the requirements? (answer with ratio)
爸爸要加工一批零件，计划每天加工24个，正好可按期完工，现在要求工期缩短20%，那么爸爸每天要加工多少个零件才能达到要求？(用比例解答)
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">24 / (4/5)</gadget>
<output>30</output>

<result>30</result>