The average of the two numbers A and B is 30, the average of the two numbers B and C is 34, the average of the two numbers A and C is 32, find the average of the three numbers A, B, and C.
甲、乙两数的平均数是30，乙、丙两数的平均数是34，甲、丙两数的平均数是32，求甲、乙、丙三个数的平均数．
<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<gadget id="calculator">34 * 2</gadget>
<output>68</output>

<gadget id="calculator">32 * 2</gadget>
<output>64</output>

<gadget id="calculator">60 + 68 + 64</gadget>
<output>192</output>

<gadget id="calculator">192 / 2 / 3</gadget>
<output>32</output>

<result>32</result>