Workflow to interact Excel with website

How to create the workflow that opens Excel, reads data from it, then go to a website that calculates and generates BMI and paste it back to Excel onto Column D then send email of the respective BMI results to respective email addresses?

Hello welcome to the community,

Please show us the excel and the fields to be logged in on your site. But the flow you specified

1- Excell Process Scope
Use Excel File
Read Range
2- Assign
SumBMI = (From d in dtData.AsEnumerable
Where Not (isNothing(d(1)) OrElse String.IsNullorEmpty(d(1).toString.Trim))
Select v = CDbl(d(1).toString.Trim).Sum(Function (x) x)