Known: a+b=4, ab=1, find the value of 2a+3ab+2b.
已知：a+b=4，ab=1，求2a+3ab+2b的值．
<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<gadget id="calculator">3 * 1</gadget>
<output>3</output>

<gadget id="calculator">8 + 3</gadget>
<output>11</output>

<result>11</result>