The average of the three numbers A, B, and C is 52, the average of the two numbers A, B is 60, what is the number C?
甲、乙、丙三个数的平均数是52，甲、乙两个数的平均数是60，丙数是多少？
<gadget id="calculator">52 * 3</gadget>
<output>156</output>

<gadget id="calculator">60 * 2</gadget>
<output>120</output>

<gadget id="calculator">156 - 120</gadget>
<output>36</output>

<result>36</result>