Use (2/5) and the sum of its reciprocal to divide the difference between 3 and 0.1, what is the quotient?
用(2/5)与它倒数的和，去除3与0.1的差，商是多少？
<gadget id="calculator">3 - 0.1</gadget>
<output>2.9</output>

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

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">(2/5) + (5/2)</gadget>
<output>29/10 = around 2.9</output>

<gadget id="calculator">2.9 / (29/10)</gadget>
<output>1</output>

<result>1</result>