column calculation. What is the quotient of (1/2) minus (1/4) of (2/3) divided by (3/4)?
列式计算．(2/3)的(1/2)减去(1/4)的差除以(3/4)，商是多少？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(2/3) * (1/2)</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">(1/3) - (1/4)</gadget>
<output>1/12 = around 0.083333</output>

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

<gadget id="calculator">(1/12) / (3/4)</gadget>
<output>1/9 = around 0.111111</output>

<result>1/9 = around 0.111111</result>