There are two integers A and B, and A◇B means the average of A and B. It is known that A◇8=27, then A=how much.
有两个整数是A、B，A◇B表示A与B的平均数．已知A◇8=27，那么A=多少．
<gadget id="calculator">27 * 2</gadget>
<output>54</output>

<gadget id="calculator">54 - 8</gadget>
<output>46</output>

<result>46</result>