Calculation: (1-((1/2)-(1/3)))/(5/7).
计算：(1-((1/2)-(1/3)))/(5/7)．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">(1/2) - (1/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">(5/6) / (5/7)</gadget>
<output>7/6 = around 1.166667</output>

<result>7/6 = around 1.166667</result>