For two numbers a and b, it is stipulated that a⊕b=a*b+a+b, then 6⊕2=how much.
对于两个数a与b，规定a⊕b=a*b+a+b，那么6⊕2=多少．
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">12 + 6 + 2</gadget>
<output>20</output>

<result>20</result>