Xiaoxiao has 18 yuan, and naughty has 17 yuan. How many pieces of 5 yuan can be exchanged together? What is the correct column
笑笑有18元，淘气有17元，合起来能换多少张5元的人民币．正确列式是多少
<gadget id="calculator">18 + 17</gadget>
<output>35</output>

<gadget id="calculator">35 / 5</gadget>
<output>7</output>

<result>7</result>