(1/4) of a number is exactly the quotient of (5/3) and (5/6), and this number is ((())/(())) of 10.
一个数的(1/4)正好是(5/3)与(5/6)的商，这个数是10的((())/(()))．
<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

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

<gadget id="calculator">(5/3) / (5/6) / (1/4) / 10</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>