Suppose A and B both represent numbers, and it is stipulated that A⊙B=4A-3B, then 5⊙(6⊙7)=how many.
设A、B都表示数，规定A⊙B=4A-3B，则5⊙(6⊙7)=多少．
<gadget id="calculator">4 * 5</gadget>
<output>20</output>

<gadget id="calculator">4 * 6</gadget>
<output>24</output>

<gadget id="calculator">3 * 7</gadget>
<output>21</output>

<gadget id="calculator">24 - 21</gadget>
<output>3</output>

<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">20 - 9</gadget>
<output>11</output>

<result>11</result>