There are 200 workers in the second workshop, and the number of workers in the second workshop is 20% less than that in the first workshop. How many workers are there in a workshop?
二车间有工人200人，二车间工人数比一车间少20%．一车间有工人多少人？
<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">200 / (4/5)</gadget>
<output>250</output>

<result>250</result>