Salary break up configuration

Dear Consultants,

I need to configure salary with following breakup for my client.

Gross = 10000 = A

Fix Allowance 1 =300 = B

Fix Allowance 2 = 100 = C

Basic Allowance = (A-B-C) * 2/3 (66.66%) = 6400 = D

Medical Allowance = (10% of D) = 640 = E

House Rent = (A-B-C-D-E) * 50% = 1280 = F

Conveyance Allowance = (A-B-C-D-E) * 30% = 768 = G

Utility Allowance = (A-B-C-D-E) * 20% = 512 = H

NET TOTAL = B+C+D+E+F+G+H = 10000

PLEASE HELP