Xiaohua reads a story book. He reads 1/6 of the pages of the book on the first day, 15 pages on the second day, and continues on the third day, starting from page 36. How many pages does this storybook have?
小华看一本故事书，他第一天看了全书页数的(1/6)，第二天看了15页，他第三天接着看，应从第36页看起．这本故事书一共有多少页？
<gadget id="calculator">36 - 1 - 15</gadget>
<output>20</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">20 / (1/6)</gadget>
<output>120</output>

<result>120</result>