The number of people in the sixth (five) class, no matter in a three-way column, a four-way column, or a five-way column, must be short of 2 people. Six (five) classes have at least how many students.
六(五)班的人数，不管排成三路纵队、四路纵队，还是五路纵队，都要缺2人．六(五)班至少有学生多少人．
<gadget id="calculator">3 * 4 * 5</gadget>
<output>60</output>

<gadget id="calculator">60 - 2</gadget>
<output>58</output>

<result>58</result>