A typist types a manuscript, 25% of the total is typed on the first day, and the rest (4/9) is typed on the second day. If there are 4 more pages typed on the second day than on the first day, then this manuscript has how many pages
一个打字员打一篇稿件，第一天打了总数的25%，第二天打了余下的(4/9)，如果第二天比第一天多打了4页，那么这篇稿件有多少页？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(3/4) * (4/9)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) - (1/4)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">4 / (1/12)</gadget>
<output>48</output>

<result>48</result>