Calculation: 3-(2/7)/(8/35)-(3/4).
计算：3-(2/7)/(8/35)-(3/4)．
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">8 / 35</gadget>
<output>8/35 = around 0.228571</output>

<gadget id="calculator">(2/7) / (8/35)</gadget>
<output>5/4 = around 1.25</output>

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

<gadget id="calculator">3 - (5/4) - (3/4)</gadget>
<output>1</output>

<result>1</result>