book has 280 pages. Xiaohua read (1/7) of this book on the first day, and the number of pages he read on the second day was (5/4) times that of the first day. How many pages did Xiaohua read on the second day? Page?
一本书280页，小华第一天看了这本书的(1/7)，第二天看的页数是第一天的(5/4)倍，小华第二天看了多少页？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">280 * (1/7) * (5/4)</gadget>
<output>50</output>

<result>50</result>