There are 28 workers in a certain workshop, including 12 male workers, and how many female workers were transferred later. At this time, female workers accounted for (3/5) of the total number.
某车间有工人28人，其中男职工12人，后来又调进多少名女职工，这时女职工占总人数的(3/5)．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">12 / (2/5)</gadget>
<output>30</output>

<gadget id="calculator">30 - 28</gadget>
<output>2</output>

<result>2</result>