Not sure what you mean with "divide a column". Anyways, it should be possible.
Alternatively, you might want to try using pvesh with the flag `-output-format json` or `-output-format json-pretty` to get the data as json and manipulate that.
I have a proxmox server that I don't want to reinstall. Do you know a solution to reset all statistics (rrd graphics) ?
I'm looking for a solution to reset it if possible ?