The lowest point in earth, at the bottom of the marian trench is 10911m. what is this in miles

I used unit multipliers to convert meters to miles. The units of measurement all factored out except for the mile unit, leaving me with 6.779, or 6.8 miles if I round up.
{ Note that 1 meter = 100 cm, 2.54 cm = 1 inch, 12 inch = 1 ft, and 5,280 ft = 1 mile. }

photo?

Explanation: