399572 ÷ 85 
The aim is to understand the frequency of 85 in 399572.

On to step 1:
85 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 85

Going ahead to step 2:
85 can be fit into 39 0 times, resulting in a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Take the next digit (9) from the dividend and append it to 39, then repeat: 399 / 85

Let's proceed to step 3:
When dividing 399 by 85, we get 4 with a remainder of 59.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 340 from 399 and we're left with 59.
Bring next digit (5) of the dividend behind the 59 and repeat the process: 595 / 85

On to step 4:
When dividing 595 by 85, we get 7 with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 47.0
Subtract 595 from 595 to get 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 85

Advancing to step 5:
7 divided by 85 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 470.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 85

Step 6:
If we divide 72 by 85, we get 0 and a remainder of 72.
Write down 0 as next digit of the result. 
Result so far: 4700.0
If we take 0 away from 72, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 7:
85 goes into 720 8 times with a remainder of 40.
The next digit of our result is 8. 
Result so far: 4700.8
If we subtract 680 from 720, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 8:
If we divide 400 by 85, we get 4 and a remainder of 60.
Write down 4 as next digit of the result. 
Result so far: 4700.84
The remainder is 60 after subtracting 340 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 9:
85 can be fit into 600 7 times, resulting in a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 4700.847
If we subtract 595 from 600, we 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.

Let's proceed to step 10:
85 goes into 50 0 times with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 4700.847
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 11:
500 divided by 85 is 5 with a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 4700.84705
Subtract 425 from 500 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 12:
85 goes into 750 8 times with a remainder of 70.
Put 8 as the next digit of the answer. 
Result so far: 4700.847058
Subtracting 680 from 750 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 13:
The number 85 fits into 700 8 times, leaving a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 4700.8470588
The remainder is 20 after subtracting 680 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 4700.8470588 with a balance of 2e-07.