Adongo Ltd is a mining company and has the following set of data relating to 2016 year of assessment

GH

Revenue 20,000,000

Cost of operation 15,000,000

Margin 5,000,000

The following were considered in the determining the chargeable income

12. Losss from operating amounting to GH600,000 recorded in 2010 was added to the cost above.
13. Proceeds of GH500,000 from realization of assets was included in the revenue.
14. Capital allowance of GH3,000,000 was included in the cost of operation
15. Penalty of GH2,000,000 imposed by the Minerals Commission for breach of industry was included in thr cost of operation.

Required:

1. Calculate the Royalty payable if any
2. Compute the corporate tax payable by Adongo Ltd.