When simplifying a fraction, I used 2 to make an appointment once, and used 3 to make an appointment twice. At this time, I got a simplified fraction (2/5). What fraction is the original fraction?
化简一个分数时，用2约了一次，用3约了两次，这时得到一个最简分数是(2/5)，原来这个分数是几分之几？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>