This is a useful method for when traveling between imperial and metric countries and need to know what kilometers to miles are.
The formula to convert kilometers to miles is number of (kilometers / 8 ) X 5
So lets try 80 kilometers into miles
80/8 = 10
multiplied by 5 is 50 miles!
Another example
40 kilometers
40 / 8 = 5
5 X 5= 25 miles
