There are two relatively prime composite numbers whose least common multiple is 100. What is the difference between the true fraction and the improper fraction composed of these two numbers?
有两个互质的合数，它们的最小公倍数是100，由这两个数组成的真分数与假分数的差是多少．
<gadget id="calculator">25 / 4</gadget>
<output>25/4 = around 6.25</output>

<gadget id="calculator">4 / 25</gadget>
<output>4/25 = around 0.16</output>

<gadget id="calculator">(25/4) - (4/25)</gadget>
<output>609/100 = around 6.09</output>

<result>609/100 = around 6.09</result>