The school bought a total of 550 story books and literary books, among which the number of story books is 5/6 of literary books. How many literary books are there?
学校买来故事书和文艺书共550本，其中故事书的本数是文艺书的(5/6)，文艺书有多少本．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 + (5/6)</gadget>
<output>11/6 = around 1.833333</output>

<gadget id="calculator">550 / (11/6)</gadget>
<output>300</output>

<result>300</result>