A book has 200 pages in total. Xiao Ming read 5% on the first day. How many pages did he read on the first day?
一本书共200页，小明第一天看了5%，第一天看了多少页．
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">200 * (1/20)</gadget>
<output>10</output>

<result>10</result>