Xiaoming can complete a manuscript in 2 days alone (1/4), and Xiaohong can complete half of it in 5 days alone. If two people typed this manuscript, Xiaoming typed 20 pages more than Xiaohong when they finished typing, how many pages does this manuscript have?
打一份书稿，小明单独2天能完成(1/4)，小红单独打5天能完成一半．如果两人打这份书稿，打完时小明比小红多打了20页，这份书稿有多少页？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) / 2</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) / 5</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/8) + (1/10)</gadget>
<output>9/40 = around 0.225</output>

<gadget id="calculator">1 / (9/40)</gadget>
<output>40/9 = around 4.444444</output>

<gadget id="calculator">(1/8) * (40/9)</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">(1/10) * (40/9)</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(5/9) - (4/9)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">20 / (1/9)</gadget>
<output>180</output>

<result>180</result>