Solve the equation: (5/4)x/(5/6)=(2/3).
解方程：(5/4)x/(5/6)=(2/3)．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(2/3) * (5/6)</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/9) / (5/4)</gadget>
<output>4/9 = around 0.444444</output>

<result>4/9 = around 0.444444</result>