Where can I get info? Trying to MULT 15 aec. * 10. Using =sum(((0:15)*0) ?
Every open bracket should have a closed one.
https://wiki.documentfoundation.org/Faq/Calc/015
Duplicate of Where is info on Err: 102? where the cause and solution is given in answer.
Have you read these answers?
And you can read this side.