When Lili revised the article, she deleted (1/5) of the original text. After reading it, the teacher felt that some parts of the article should be revised. Lili added (1/4) of the deleted text. Now Lili’s article What fraction is the length of the original text?
丽丽修改文章时，删去了原文的(1/5)，老师看后，觉得文章有的地方还应该加以修改，丽丽又增补了删去文字的(1/4)，现在丽丽文章的长度是原文的几分之几？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/5) * (1/4)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(4/5) + (1/20)</gadget>
<output>17/20 = around 0.85</output>

<result>17/20 = around 0.85</result>