[users] [moderated] YOU MUST GIVE A SUMMARY HERE

[JS Kolderman]

I want in Calc say in A1 a total number of the input in Cel B1.
I try to explain in cel A1=10 then I input in B1 10 then A1=20  , then input 5 
then is A1 25 , and last input -3 then is A1 22  , when i set B1 on zero then 
must A1 stay on 22
I exel it was verry easy , I give the formula +A1+B1 and I have in set in 
opties iteraties one step  and it works
I hope you can help me
Wirh greetings Sjaak Kolderman