The quantity of the second batch of products produced by a certain workshop is 20% more than the quantity of the first batch of qualified products. The pass rate of the second batch of products is 90%. What percentage of the quantity of the second batch of qualified products is the quantity of the first batch of qualified products?
某车间生产的第二批产品数量比第一批合格的产品数量多20%，第二批产品合格率是90%，第二批合格产品数量是第一批合格产品数量的百分之几？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>