We're dividing 85 by 10 
The aim is to understand the frequency of 10 in 85.

Step 1:
If we divide 8 by 10, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 10

Advancing to step 2:
85 divided by 10 is 8 with a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtract 80 from 85 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 3:
If we divide 50 by 10, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 8.5
Deduct 50 from 50 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 4:
The number 10 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 8.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 5:
The number 10 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 8.5
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 8.5 and a remainder of 0.0.