Calculation: (2-((1/2)+(3/4)))/(5/6).
计算：(2-((1/2)+(3/4)))/(5/6)．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/2) + (3/4)</gadget>
<output>5/4 = around 1.25</output>

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

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

<gadget id="calculator">(3/4) / (5/6)</gadget>
<output>9/10 = around 0.9</output>

<result>9/10 = around 0.9</result>