Question 465132
Sum of all units digits: 20*(0+2+4+6+8) = 20*20 = 400
Sum of all tens digits: 10*(0+2+4+6+8)*20 = 4000
Sum of all hundreds digits: 100*(2+4+6+8)*25 = 50000

Total: = 400 + 4000 + 50000 = 54,400.