The FIND function in Excel is a text function that allows you to find the position of a specified substring within a text string. It can be used to manipulate text data in various ways, such as extracting parts of a text string or replacing specific characters within a text string.

Syntax 
=FIND(find_text, within_text, [start_num])

Arguments 
find_text - the text string that you want to find
within_text  - where you want to start searching
start_num - the position within "within_text" where you want to start searching for