(3/4)/(1/2)-(5/6)*(4/5).
(3/4)/(1/2)-(5/6)*(4/5)．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/4) / (1/2)</gadget>
<output>3/2 = around 1.5</output>

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

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

<gadget id="calculator">(5/6) * (4/5)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(3/2) - (2/3)</gadget>
<output>5/6 = around 0.833333</output>

<result>5/6 = around 0.833333</result>