The garment factory processes a batch of garments. The original plan is to process 250 pieces per day, which takes 18 days to complete. The actual processing is 20% more than the original plan every day. How many days can the actual work be completed? (solution by equation)
服装厂加工一批服装，原计划每天加工250件，18天完成．实际每天比原计划多加工20%，实际多少天可以完工？(用方程解)
<gadget id="calculator">250 * 18</gadget>
<output>4_500</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">250 * (1/5)</gadget>
<output>50</output>

<gadget id="calculator">250 + 50</gadget>
<output>300</output>

<gadget id="calculator">4_500 / 300</gadget>
<output>15</output>

<result>15</result>