Hi can anyone help me with this calculation:

At 31 December 2004 Q a limited liability company, owned a building that cost $800,000 on January 1 1995, it was being depreciated at 2% per year. On January 1 2005 a revaluation to $1,000,000 was recognized, at the date the building has a remaining useful life of 40 years. What is the depreciation charge for the year ended 31 December 2005 and the revaluation reserve balance as at January 2005?

My Working:
1,000,000/40 = 25,000 is the depreciation charge for year ended 31 December 2005, but the revaluation reserve is giving me some problem with the calculation.