When a=2, b=5, what is 3a+4b=
当a=2，b=5时，3a+4b=多少
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">4 * 5</gadget>
<output>20</output>

<gadget id="calculator">6 + 20</gadget>
<output>26</output>

<result>26</result>