The number of female workers in a workshop is 90% of that of male workers. Due to work needs, 15 female workers were transferred in. At this time, the ratio of female workers to male workers is 6:5. How many male workers are there in this workshop?
某车间的女工人数是男工的90%，因工作需要，又调入女工15人，这时女工人数与男工人数的比是6：5．这个车间有男工多少人？
<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(6/5) - (9/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">15 / (3/10)</gadget>
<output>50</output>

<result>50</result>