What is the solution of the equation (1/2)x+1=0.
方程(1/2)x+1=0的解是多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / (1/2)</gadget>
<output>2</output>

<result>2</result>