What is the difference between the reciprocal of 5 and the product of (2/5) minus (1/25)?
5的倒数与(2/5)的积减去(1/25)，差是多少？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(1/5) * (2/5)</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">1 / 25</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">(2/25) - (1/25)</gadget>
<output>1/25 = around 0.04</output>

<result>1/25 = around 0.04</result>