VAT Settlement Process

Hi All,

     Please help to do the vat settlement process as per the below requirement

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Purchase	100000
VAT	5%
Input Vat	5000	A
Sales	500000
VAT	5%
Sales Within State	100000	B
VAT Output	5000	C
Vat Eligible for settlement	100000
Formula (A*B)/C

How to do the vat settlement process for Purchase and with in state sales.

Thanks in advance

Mohan