Sanyou Garment Factory received the task of producing 4,800 suits, and completed 20% of it in the first 4 days. According to this calculation, how many days will it take to complete this task?
三有服装厂接到生产4800套西服的任务，前4天完成了20%，找照这样计算，完成这项任务一共需要多少天？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) / 4</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 / (1/20)</gadget>
<output>20</output>

<result>20</result>