The students in class 1 of the fifth year perform in a queue, and each row of 9 or 15 people is just the whole row. It is known that there are less than 50 students in this class. How many people are there in this class?
五年1班学生进行队列表演，每行9人或15人都正好整行，已知这个班的学生不到50人，这个班有多少人？
<gadget id="calculator">3 * 3 * 5</gadget>
<output>45</output>

<result>45</result>