factory has 280 employees, and female workers account for 40% of male workers. How many female workers are there?
某厂有职工280人，女工是男工的40%．女工有多少人？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">280 / (7/5)</gadget>
<output>200</output>

<gadget id="calculator">200 * (2/5)</gadget>
<output>80</output>

<result>80</result>