There are three numbers A, B, and C. The average of A and B is 40, the average of B and C is 44, and the average of A and C is 36. Question: What is the average of these three numbers?
甲、乙、丙三个数，甲、乙的平均数是40，乙、丙的平均数是44，甲、丙的平均数是36．问：这三个数的平均数是多少？
<gadget id="calculator">40 * 2</gadget>
<output>80</output>

<gadget id="calculator">44 * 2</gadget>
<output>88</output>

<gadget id="calculator">36 * 2</gadget>
<output>72</output>

<gadget id="calculator">80 + 88 + 72</gadget>
<output>240</output>

<gadget id="calculator">240 / 2 / 3</gadget>
<output>40</output>

<result>40</result>