6.85 = 6 + 85/100 = 6 + 17/20 = 120/20 + 17/20 = 137/20
1000 mm = 1 m so 685 mm = 685/1000 = 0.685 m. Simple!
.685 = 0 + (6/10) + (8/100) + (5/1000)
If that's 6/85, it is in its simplest form.
6+8+5
685 minutes? = 11.41 hours
685 - 548 = 137
It is: 685/1
685
685 rounded to the nearest integer is 685.
1, 5, 137, 685
411. (685 x .60)
5 x 137 = 685