When c=3, d=2, x=1.5, what is the value of cd+2x
当c=3，d=2，x=1.5时，cd+2x的值是多少
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">2 * 1.5</gadget>
<output>3</output>

<gadget id="calculator">6 + 3</gadget>
<output>9</output>

<result>9</result>