All the students in class 5 and 1 go on an autumn outing. If there are 15 people or 9 people, there will be more than 2 people. How many people are there in this class?
五1班全体同学去秋游，按15人一组或9人一组都多余2人，这个班有多少人？
<gadget id="calculator">3 * 3 * 5</gadget>
<output>45</output>

<gadget id="calculator">45 + 2</gadget>
<output>47</output>

<result>47</result>