The students in class one of the fifth grade play games in groups, and each group has 3 or 5 students. It is known that there are less than 50 students in this class. How many people are there in this class?
五年级一班学生分组做游戏，每组3人或5人都正好分完，已知这个班的学生不到50人，这个班有多少人．
<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<gadget id="calculator">15 * 3</gadget>
<output>45</output>

<result>45</result>