The solution of the equation 1.5x-0.4=0.8 is x=how much.
方程1.5x-0.4=0.8的解是x=多少．
<gadget id="calculator">0.8 + 0.4</gadget>
<output>1.2</output>

<gadget id="calculator">1.2 / 1.5</gadget>
<output>0.8</output>

<result>0.8</result>