What is the quotient of (7/5) divided by the difference between (4/5) and (2/3).
(7/5)除(4/5)与(2/3)的差，商是多少．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">(4/5) - (2/3)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">7 / 5</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">(2/15) / (7/5)</gadget>
<output>2/21 = around 0.095238</output>

<result>2/21 = around 0.095238</result>