In a factory, the ratio of the number of male employees to the number of female employees was 2:5. Later, 10 female employees left for some reason. At this time, the number of female employees accounted for 3/5 of the total number of employees. How many male employees are there in the factory?
某工厂原来男职工人数与女职工人数比2：5，后来有10名女职工因事离开，这时女职工人数占现在职工总人数的(3/5)，工厂有男职工多少人？
<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

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

<gadget id="calculator">10 / 1</gadget>
<output>10</output>

<result>10</result>