There are 300 science and technology books in the school library, and the number of story books is 5 times more than 50 science and technology books. How many story books are there?
学校图书馆有科技书300本，故事书的本数是科技书的5倍多50本，故事书有多少本？
<gadget id="calculator">300 * 5</gadget>
<output>1_500</output>

<gadget id="calculator">1_500 + 50</gadget>
<output>1_550</output>

<result>1_550</result>