Xiaoyu reads a story book. He reads (1/6) of the whole book on the first day and (1/4) of the whole book on the second day. There are 70 pages left. How many pages does this story book have?
小宇看一本故事书，第一天看了全书的(1/6)，第二天看了全书的(1/4)，还剩70页，这本故事书一共有多少页？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/6) - (1/4)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">70 / (7/12)</gadget>
<output>120</output>

<result>120</result>