There are 35 books on the cart. There are five fiction books, 4 more non-fiction books than fiction books, 2 times as many autobiographies as fiction books, and the rest picture books. How many books were picture books?
There are 5+4 = 
<gadget id="calculator">5+4</gadget>
<output>9</output>
9 non-fiction books on the cart.
There are 2*5 = 
<gadget id="calculator">2*5</gadget>
<output>10</output>
10 autobiographies on the cart.
There are 5+9+10 = 
<gadget id="calculator">5+9+10</gadget>
<output>24</output>
24 fiction, non-fiction, and autobiography books on the cart.
There are 35-24 = 
<gadget id="calculator">35-24</gadget>
<output>11</output>
11 picture books on the cart.

<result>11</result>