Given that the value of the algebraic formula x+2y is 3, what is the value of the algebraic formula 2x+4y+1
已知代数式x+2y的值是3，则代数式2x+4y+1的值是多少
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">6 + 1</gadget>
<output>7</output>

<result>7</result>