i'm working on a shipping log that i do now by hand and would like to
automate if possible. every load equals 1,000 and alot of the loads are split
loads.

a b c d e
1 date amount previous current total
2 3/10 2053 1000
3 1000
4 53
5 3/11 1019 53 947 1000
6 72
7 3/12 3000 72 928 1000
8 1000
9 1000
10 72

in this example it shows what i need to equal 1,000 and if there's over
1,000 left of that run i'd like the next line to show 1,000 and so on until i
can't make a full load of 1,000.

hope this sounds right
thanks