It is stipulated that a△b=(3a+2b)(a+2b), then 1△2=how much.
规定a△b=(3a+2b)(a+2b)，那么1△2=多少．
<gadget id="calculator">3 * 1</gadget>
<output>3</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">1 + 4</gadget>
<output>5</output>

<gadget id="calculator">7 * 5</gadget>
<output>35</output>

<result>35</result>