Zhang Dong reads a 200-page storybook, reads (1/4) of this book on the first day, and reads the rest (1/3) on the second day. How many pages did you read the next day?
张东看一本书200页的故事书，第一天看这本书的(1/4)，第二天看余下的(1/3)．第二天看了多少页？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">200 * (3/4) * (1/3)</gadget>
<output>50</output>

<result>50</result>