Define a new operation "⊙", its calculation rule is: a⊙b=2*a+3*b, for example, 18⊙5=2*18+3*5=51, 7⊙9=2*7+ 3*9=41． So what is 5⊙4 equal to?
定义一种新的运算"⊙"，其计算法则为：a⊙b=2*a+3*b，例如18⊙5=2*18+3*5=51，7⊙9=2*7+3*9=41．那么5⊙4等于多少．
<gadget id="calculator">2 * 5</gadget>
<output>10</output>

<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<gadget id="calculator">10 + 12</gadget>
<output>22</output>

<result>22</result>