How do I calculate my curved grade?

For my cl the midterm is worth 40% and the final is 60%. For the midterm, the average was a 76.9 and the standard deviation was 16.08. I got an 86. For the final, the average was a 62 and I am not so sure about the standard deviation. I got a 53. What would the rough estimate of my grade me for the cl? Thanks!