MATH PEOPLE NEEDED =(

I've tried to solve this for about 15 minutes now, and I keep coming to the same wrong conclusions. I'm just finding the average, so why is it giving me so much trouble? Auuuugh. I just want the answer and to know how I got it.

Ling wants to determine the average distance she travels each day in her car. She records the odometer reading each morning for a week.

Day 1 2 3 4 5 6 7
Odometer (mi) 10,000 10,200 10,420 10,760 10,800 11,150 11,400

What is the mean distance Ling travels each day? Show your work.