It’s 5,000 but if your first number after the “,” is greater than 5 your round up for example 3,456 you couldn’t round that up but you can round it down to 3,000
2nd # after the “,” is higher than 5 round or is 5 you look to see if it’s greater than ,550 you take the number in front of the “,” and go up one
2nd # before the “,” is lower than 5 round you the number before the “,” stays the same and just add three 0 after the “,”