The sixth grade students participate in the mathematics interest group. The number of boys (1/2) is 3 more, and the number of girls (2/3) is 12 less. How many people are there in the mathematics interest group?
六年级的同学参加数学兴趣小组，男生占参加人数的(1/2)多3人，女生占参加人数的(2/3)少12人，求参加数学兴趣小组的一共有多少人？
<gadget id="calculator">12 - 3</gadget>
<output>9</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(1/2) + (2/3)</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">(7/6) - 1</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">9 / (1/6)</gadget>
<output>54</output>

<result>54</result>