Adiver go to a location 6 3/5 m below sea level he then dove to a second location 8 1/5 m below sea level how many meters are there between the two locations

In this case, the diver diving from 6 3/5m below sea level into 8 1/5m below sea level.
Then to determine the distance between the two place, you just need to subtract the second location with the first location. The equation would be: 

Distance : 2nd location - 1st location= 8 1/5m - 6 3/5m

What is the question ehre