A book has 200 pages. Xiao Liu reads this book every day (1/5), and Xiao Li reads it every day (4/7). How many pages does Xiao Li read every day?
一本书200页，小刘每天看这本书的(1/5)，是小李每天看的(4/7)，小李每天看多少页？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">(1/5) / (4/7)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">200 * (7/20)</gadget>
<output>70</output>

<result>70</result>