Calculation: (3/4)-(1/3)+(1/4)-(2/3).
计算：(3/4)-(1/3)+(1/4)-(2/3)．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">(3/4) - (1/3)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(1/4) - (2/3)</gadget>
<output>-5/12 = around -0.416667</output>

<gadget id="calculator">(5/12) + (-5/12)</gadget>
<output>0</output>

<result>0</result>