A factory has 30 male employees and 20 female employees, how many male employees account for the total number of employees in the factory?
某厂有男职工30人，女职工20人，男职工占全厂职工总数的多少．
<gadget id="calculator">30 + 20</gadget>
<output>50</output>

<gadget id="calculator">30 / 50</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>