Please help in calculating ROI?

[REJI V]

Data:
Total Area: 50000 Sq.M
Construction Cost: $25Mn
Construction Period: 2 Years
Financing: Equity (30%), Debt (70%)
Loan terms: interest - 10% p.a., Term - 3 years (from the date of construction)

The developer wants to sell the property in the first year of operation at a rate of $2500 per Sq.M. What will be ROI after servicing the debt?

Please help in calculating ROI