U should only put final post count at each day end. For example its 0:00 am here atm and i put final post count i have for today , its 1446, that is all input u need to give each day and it will do the rest for u.
When u put final post count for that day it will auto update everything. U only should change all red boxes once, and then 1 green box each day. Dont edit any other green box except the one for current day , u can imput post count for that day mulitple times but i usually do it when i am finished that day at 00:00 or earlier if i got to bed earlier.
Here u can take a look http://1drv.ms/1odWlJo . When i put in 1446 it auto changed everything , and put that post count for all days till the end in case i dont make any post on some days. So when i start again i just fill in post count for that day i started again.