Calculation: (1/4)/(7/8)/(2/3).
计算：(1/4)/(7/8)/(2/3)．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

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

<gadget id="calculator">(1/4) / (7/8) / (2/3)</gadget>
<output>3/7 = around 0.428571</output>

<result>3/7 = around 0.428571</result>