What is the quotient of the reciprocal of (2/5) divided by (4/5).
(2/5)的倒数除以(4/5)的商是多少．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / (2/5) / (4/5)</gadget>
<output>25/8 = around 3.125</output>

<result>25/8 = around 3.125</result>