Solve the equation: if (2/9)(0.6+x)=(1/3), then x=how much.
解方程：若(2/9)(0.6+x)=(1/3)，则x=多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">(2/9) * 0.6</gadget>
<output>0.133333</output>

<gadget id="calculator">(1/3) - 0.133333</gadget>
<output>0.2</output>

<gadget id="calculator">0.2 / (2/9)</gadget>
<output>0.9</output>

<result>0.9</result>