A typist types a manuscript. I typed 1/4 of the total on the first day, 40% of the total on the second day, and typed 18 more pages on the second day than on the first day. How many pages does this manuscript have?
一个打字员打一篇稿件．第一天打了总数的(1/4)，第二天打了总数的40%，第二天比第一天多打18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">1 / 4</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">18 / (3/20)</gadget>
<output>120</output>

<result>120</result>