There is an operation symbol "△", known a△b=2a+b, how much is 5△(3△2)= calculated.
有一种运算符号"△"，已知a△b=2a+b，计算5△(3△2)=多少．
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 + 2</gadget>
<output>8</output>

<gadget id="calculator">10 + 8</gadget>
<output>18</output>

<result>18</result>