Develop a calculator script for the site

Employer
[no-member:pro]Lena[/no-member:pro]
Project parameters
Type of cooperationOne-time project
SectionWeb development, Web programming
Prepaymentwithout prepayment
Payment methodsCash, Bank transfer, Electronic money
Acceptance of requestsfrom Jan 7, 2019 until Jan 8, 2019
Project description
Good day you need to Develop a calculator script for the site, the full T.Z. can send the contractor and discuss the details.
I would like to know the lines and the cost.
I would like to know the lines and the cost.