We are given
A theater has 1,678 seats
It means that
In 1 show , 1678 people comes
A magician performed 3 sold out shows at the theater
so, we have to find total number people for 3 shows
total number of people = (number of people in one show )* (total number of shows)
now, we can plug values
we get
total number of people = 3*1678
total number of people is 5034..............Answer