Li Dong took 5 yuan to buy stationery. He has spent 1.5 yuan to buy pencils, and the rest of the money is used to buy exercise books at 0.35 yuan each. How many exercise books can he buy?
李东拿5元钱买文具．他买铅笔已用去1.5元，剩下的钱买练习簿，每本0.35元．他可以买多少本练习簿？
<gadget id="calculator">5 - 1.5</gadget>
<output>3.5</output>

<gadget id="calculator">3.5 / 0.35</gadget>
<output>10</output>

<result>10</result>