There are 48 students in the mathematics interest group and the gymnastics group of Red Star School. The number of students in the mathematics interest group is 4 less than that of the gymnastics group. How many students are there in the mathematics interest group?
红星学校数学兴趣组与体操组共有学生48人，数学兴趣组比体操组少4人，数学兴趣组有多少人？
<gadget id="calculator">48 - 4</gadget>
<output>44</output>

<gadget id="calculator">44 / 2</gadget>
<output>22</output>

<result>22</result>