The students in Class 6 and Class 1 are attending physical activity class. If they are arranged in 3 rows, there will be less than 1 person;
六1班同学上体育活动课，排成3行少1人，排成4行多3人，排成5行少1人，上体育活动课的同学至少有多少人？
<gadget id="calculator">3 * 4 * 5</gadget>
<output>60</output>

<gadget id="calculator">60 - 1</gadget>
<output>59</output>

<result>59</result>