(3/10)/(5/6)*(4/5).
(3/10)/(5/6)*(4/5)．
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

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

<gadget id="calculator">(3/10) / (5/6)</gadget>
<output>9/25 = around 0.36</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(9/25) * (4/5)</gadget>
<output>36/125 = around 0.288</output>

<result>36/125 = around 0.288</result>