The positions of the students in the second class of the fifth grade are arranged in 10 columns, and the number of people in each column is the same. The position of the last student in the tenth column is represented by a number pair (10, 5). How many people are there in the second class of the fifth grade.
五年级二班同学的位置排了10列，每列人数相同，第10列最后一名同学的位置用数对表示是(10，5)，五年级二班共有多少人．
<gadget id="calculator">5 * 10</gadget>
<output>50</output>

<result>50</result>