converting excel sheets to mysql

I’m stuck on a MySQL question and need an explanation.

I will drag and drop the excel sheet for you and all that needs to be done is what i listed below it wouldnt let me share the csv file for excel so i had to share the xlsx if you have any question please let me know.

list queries for the following:

List all patient’s info including admission, medication, doctor and bill( for billing may you please do another excel sheet)

What is the average days to pay off the bill?