The number A is 108, the number C is 204, and the number C is 186. What is the average of these three numbers?
甲数是108，已数是204，丙数是186，这三个数的平均数是多少．
<gadget id="calculator">108 + 204 + 186</gadget>
<output>498</output>

<gadget id="calculator">498 / 3</gadget>
<output>166</output>

<result>166</result>