There are 245 female workers in the Jiangnan Knitting Factory, and the number of male workers is twice the number of female workers, which is 13 less. How many male workers are there?
江南针织厂有女工245人，男工的人数是女工人数的2倍少13人，男工是多少人？
<gadget id="calculator">245 * 2</gadget>
<output>490</output>

<gadget id="calculator">490 - 13</gadget>
<output>477</output>

<result>477</result>