Write a program based on the existing vb script

Employer
[no-member:pro]Fabius[/no-member:pro]
Project parameters
Type of cooperationPeriodic employment
SectionSoftware development
Prepaymentwithout prepayment
Payment methodsBank transfer
Acceptance of requestsfrom Aug 23, 2019 until Aug 26, 2019
Project description
There is a ready-made script in excel, you need to convert to python. The problem is associated with simple calculations on the basic formulas, all the details are present in the script.