It is stipulated that a⊙b=4*a-3*b, then 5⊙6=how much.
规定a⊙b=4*a-3*b，那么5⊙6=多少．
<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">20 - 18</gadget>
<output>2</output>

<result>2</result>