(4/9)/((5/6)-(1/3))*(9/10).
(4/9)/((5/6)-(1/3))*(9/10)．
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

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

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(5/6) - (1/3)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(4/9) / (1/2)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(8/9) * (9/10)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>