How to make sure that when you put numbers, extra characters are removed in Google Doc?

Question

Google Apps Script

For example, I copied this number +38 (068) -777-5-777, pasted it into the table, how to make it so that extra characters would be automatically removed and the number became like this 380687775777?

Answer 1

1. write a macro
2. first paste everything, and only then use CTRL + H to replace unnecessary characters with "emptiness"

Answer 2

If the data is filled by an operator, then most likely, he will need a tool to normalize the data. It can be either a local program, such as a browser extension, or an add-on to the Tables themselves.
An example of how the plugin works.
The user opens a side menu, which remains open for the entire period of work

Adds a value from the buffer to the upper field, receives the result in the lower field. It is possible to fill the buffer with a new value automatically