The sixth grade selects boys (1/11) and 12 girls to participate in the mathematics competition. The remaining number of boys is twice the number of girls. It is known that there are 156 students in the sixth grade. How many of them are boys?
六年级选出男生的(1/11)和12名女生参加数学竞赛．剩下的男生人数是女生人数的2倍，已知六年级共有学生156人，其中男生有多少人？
<gadget id="calculator">2 * 156</gadget>
<output>312</output>

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

<gadget id="calculator">312 - 24</gadget>
<output>288</output>

<gadget id="calculator">1 / 11</gadget>
<output>1/11 = around 0.090909</output>

<gadget id="calculator">2 - (1/11)</gadget>
<output>21/11 = around 1.909091</output>

<gadget id="calculator">1 + (21/11)</gadget>
<output>32/11 = around 2.909091</output>

<gadget id="calculator">288 / (32/11)</gadget>
<output>99</output>

<result>99</result>