When x+2=5, how much is 3x+2*0.5=
当x+2=5时，3x+2*0.5=多少
<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">2 * 0.5</gadget>
<output>1</output>

<gadget id="calculator">9 + 1</gadget>
<output>10</output>

<result>10</result>