There are three classes in the sixth grade. The number of people in class A is B and C (1/2), the number of people in class B is A and C (1/3), and the number of people in class C is 55. How many people are there in the sixth grade?
六年级有三个班，甲班人数是乙丙的(1/2)，乙班人数是甲、丙的(1/3)，丙班有55人，求六年级共有多少人？
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/3) + (1/4)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">1 - (7/12)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">55 / (5/12)</gadget>
<output>132</output>

<result>132</result>