There are 40-50 students in a class, 8 students in one group, 3 students in one group, 12 students in each group, 1 student in each of the three groups, how many students are there in this class?
一个班有学生40～50人，8人一组，有一组少3人，12人一组，有三组各少1人，求这个班有多少人？
<gadget id="calculator">48 - 3</gadget>
<output>45</output>

<result>45</result>