There are 17 bookshelves in the library of Jianjun Primary School, with an average of 450 books on each shelf. How many books are there in this library?
建军小学图书馆有17个书架，平均每个书架上有450册图书，这个图书馆大约有多少册图书？
<gadget id="calculator">450 * 17</gadget>
<output>7_650</output>

<result>7_650</result>