There are 136 literature and art books in the school library, twice the number of science and technology books, and 70 fewer story books than three times the number of science and technology books. How many story books are there?
学校图书馆有文艺书136本书，科技书是文艺书的2倍，故事书比科技书的3倍少70本，故事书有多少本？
<gadget id="calculator">136 * 2 * 3</gadget>
<output>816</output>

<gadget id="calculator">816 - 70</gadget>
<output>746</output>

<result>746</result>