The number of girls in a certain factory is 200 more than 75% of the whole factory, and the number of boys is 1/5 of that of girls. How many boys are there in this factory?
某工厂女生人数比全厂人数的75%还多200人，男生人数是女生的(1/5)，这个工厂的男生有多少人？
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">5 * (3/4)</gadget>
<output>15/4 = around 3.75</output>

<gadget id="calculator">5 - (3/4) - (15/4)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">200 / (1/2)</gadget>
<output>400</output>

<result>400</result>