We have learned the four operations "+, -, *, /", and now it is stipulated that "*" is a new operation, then A*B=2A-B, then 7*6*5=how much.
我们学过"+、-、*、/"这四种运算，现在规定"*"是一种新运算，则A*B=2A-B，那么7*6*5=多少．
<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">16 - 5</gadget>
<output>11</output>

<result>11</result>