The average of the three numbers A, B, and C is 180. It is known that the number of A is 68, and the numbers of B and C are equal. Find the number of B.
甲、乙、丙三个数的平均数是180，已知甲数是68，乙数和丙数相等．求乙数是多少．
<gadget id="calculator">180 * 3</gadget>
<output>540</output>

<gadget id="calculator">540 - 68</gadget>
<output>472</output>

<gadget id="calculator">472 / 2</gadget>
<output>236</output>

<result>236</result>