Calculation: 1-(1-((3/4)-(3/4)/(5/3)))/(7/10).
计算：1-(1-((3/4)-(3/4)/(5/3)))/(7/10)．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">(3/4) / (5/3)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">(3/4) - (9/20)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">7 / 10</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">(7/10) / (7/10)</gadget>
<output>1</output>

<gadget id="calculator">1 - 1</gadget>
<output>0</output>

<result>0</result>