There are less than 50 students in class 51. During the queue drill, there will be 1 student left in each row of 12 or 16 students. How many students are there in this class?
五1班学生不足50人，进行队列演练时，每行12人或16人都余下1人，这个班有多少人．
<gadget id="calculator">2 * 2 * 2 * 2 * 3</gadget>
<output>48</output>

<gadget id="calculator">48 + 1</gadget>
<output>49</output>

<result>49</result>