A certain factory has female workers accounting for (3/4), and recruits 50 male workers. At this time, female workers account for (2/3) of the total number of workers. How many workers did the factory have?
某工厂的女工的占(3/4)，又招进50名男工，这时女工占总人数的(2/3)，工厂原有多少工人？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) / (3/4)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/2) - (1/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">50 / (1/6) / (3/4)</gadget>
<output>400</output>

<result>400</result>