Xiaodong reads a storybook. On the first day, he reads (1/6) of the total pages, and on the second day (1/3) of the total pages. There are 78 pages left. How many pages are there in this storybook? Page?
小冬看一本故事书，第一天看了总页数的(1/6)，第二天看了总页数的(1/3)，还剩78页没有看，这本故事书共有多少页？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

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

<gadget id="calculator">1 - (1/6) - (1/3)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">78 / (1/2)</gadget>
<output>156</output>

<result>156</result>