The ratio of male to female employees in a factory is 7:5, and there are 12 fewer female employees than male employees. How many male employees are there?
某工厂男女员工的人数比是7：5，女员工比男员工少12人，男员工有多少人．
<gadget id="calculator">7 - 5</gadget>
<output>2</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 * 7</gadget>
<output>42</output>

<result>42</result>