To read a math expression from a text file and write an output to another file

So for you guys to understand my task better, I have uploaded the screenshots of the files. The bot has to read the first file, calculate the answer and then write the answer to another text file.

Hi @Mrud2517

Do read text file and pass the output in a string variable

Do the String Manipulations
and calculate the sum separately

and write the sum by using Write text file

Ashwin S

I’m a new user of UiPath, can you do direct me to an appropriate source to learn and execute different types of string manipulations?