16 is less (2/5) than (2/5) of a number, what is this number?
16比一个数的(2/5)少(2/5)，这个数是多少？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">16 + (2/5)</gadget>
<output>82/5 = around 16.4</output>

<gadget id="calculator">(82/5) / (2/5)</gadget>
<output>41</output>

<result>41</result>