How much do I owe on a loan paid over a 30 year period with 10% per year

I am (Renting To Own a House)
The Sale price is $80,000.00. I paid a $6,000.00 Down Payment. The balance of $74,000 has to be paid over a 30 year period together with the interest rate of 10% per annumMy monthly payments are $768.57 beginning March 1, 2014 How much do I owe on the house now?