There are two layers of books on the bookshelf, the first layer is 90 more than all (3/5), and the second layer is all (1/3). How many books are there in total on the shelf?
书架上有两层书，第一层比全部的(3/5)多90本，第二层是全部的(1/3)．书架上共有书多少本？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (1/3) - (3/5)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">90 / (1/15)</gadget>
<output>1_350</output>

<result>1_350</result>