A book has 200 pages in total. Wei Wen read 25% of the book on the first day. How many pages should he read on the second day?
一本书共200页，伟文第一天看了这本书的25%，第二天应从多少页看起．
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">200 * (1/4)</gadget>
<output>50</output>

<gadget id="calculator">50 + 1</gadget>
<output>51</output>

<result>51</result>