Mr. Wang typed a manuscript. On the first day, he typed 25% of the total, and on the second day, he typed 40% of the total. On the second day, he typed 9 pages more than the first day. How many pages does this manuscript have?
王老师打一篇稿件，第一天打了总数的25%，第二天打了总数的40%，第二天比第一天多打9页，这篇稿件有多少页？
<gadget id="calculator">40 / 100</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">9 / (3/20)</gadget>
<output>60</output>

<result>60</result>