Parkland formula for fluid restoration

I was wondering if someone could tell me if I did this correctly. In order to calculate the fluids for a pediatric patient who weighs 24 kg and has a burn over 25% of BSA (using the Parkland formula for fluid restoration), I did the following:

10 x 100 = 1000
10 x 50 = 500
4 x 20 = 80
1800 (for normal fluid requirements)

4 x 24 x 25 = 2400
2400 + 1800 = 4200

4200/2 = 2100 (the amount given over the first 8 hours)
2100/8 = 262.5 ml/hr for the first 8 hours and then
2100/16 = 131.25 ml/hr for the remaining 16 hours

Also, how are the fluid requirements calculated after the first 24 hours?

Thanks for the help.