Xiao Ming reads a story book. He reads (1/3) in the first week, and reads 30% of the whole book in the second week. He reads 125 more pages in the first week than in the second week. How many pages are there in total?
小明看一本故事书，第一周看了(1/3)，第二周看了全书的30%，第一周比第二周多看125页，这本书一共多少页？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(1/3) - (3/10)</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">125 / (1/30)</gadget>
<output>3_750</output>

<result>3_750</result>