What annual instalment will discharge a debt of rs808 due in 2 years at 2% per annum

Let the early installment be x
Then 2x = 808 + (808-x)*2*1/100
=> 2x = 808 + (1616-2x)/100
=> 200x = 80800+1616-2x
=> 202x = 82416
=> x = 408
Hope it is clear. If you have any doubt in any step, you can ask.

Total installment is 2x
deb of 808
then installment+intrest on remaing sum (808-x) right?