A typist enters an article, 25% of the total number is entered on the first day, (2/5) of the total number is entered on the second day, and 6 more pages are entered on the second day than on the first day. How many pages does this article have?
某打字员录人一篇文章，第一天录入总数的25%，第二天录入总数的(2/5)，第二天比第一天多录入6页，这篇文章有多少页？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(2/5) - (1/4)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">6 / (3/20)</gadget>
<output>40</output>

<result>40</result>