The number of boys in the swimming pool is 11 fewer than 6 times that of girls, and 13 more than 4 times that of girls. So how many boys are there?
游泳池里男生人的数比女生的6倍少11人，比女生的4倍多13人，那么男生有多少人？
<gadget id="calculator">11 + 13</gadget>
<output>24</output>

<gadget id="calculator">6 - 4</gadget>
<output>2</output>

<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<gadget id="calculator">6 * 12</gadget>
<output>72</output>

<gadget id="calculator">72 - 11</gadget>
<output>61</output>

<result>61</result>