update main excel file without opening in R

General
1

ı have 2 excel data files. also main excel file get datas from 2 files then calculate new values. ı want to do this refresh process without open main excel file. is it possible in R

2

Probably, R is Turing complete

3

would you give me an example code for me ?
https://stackoverflow.com/questions/57591264/how-to-refresh-an-excel-file-from-within-r
ı try this but this sample open excel. ı wan to update in background . thanks for answer.