Female workers in a textile factory account for 80% of the total number of workers in the factory, and male workers in the first workshop account for 25% of the total male workers in the factory. Ask: What percentage of the total number of workers in the factory does the male worker in the first workshop account for?
纺织厂的女工占全厂人数的80%，一车间的男工占全厂男工的25%，问：一车间的男工占全厂人数的百分之几．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

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

<result>1/20 = around 0.05</result>