Format of excise calculation

Excise Duty is Duty payable on the Event of Manufacturing of the Goods as mentioned in CETA.

Customs Duty is the Levy Paid when Goods are brought in India from any other Country

Regarding Calculation of Excise duty, Your Question seems a Bit vague. You wanted to ask regarding Valuation of the Product for Levy of Excise duty or the Way of applying Excise duty & Rates of Duties & Different types of Duties applicable under Excise ? if you can be clear to this then You query can be answered to the required context. I hope your query to the extent answered by me is clear.

format is attached