There are at least 4 students in a class whether there are 6 students or 5 students. How many students are there in this class?
一个班的学生无论6人一组还是5人一组都多4人，这个班至少有多少人．
<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<gadget id="calculator">30 + 4</gadget>
<output>34</output>

<result>34</result>