We look at the division of 369880 by 85 
The aim is to understand the frequency of 85 in 369880.

Advancing to step 1:
85 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 85

On to step 2:
36 divided by 85 is 0 with a remainder of 36.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 36 and we're left with 36.
Grab the next digit (9) from the dividend, add it to 36, then carry on: 369 / 85

Advancing to step 3:
85 can be fit into 369 4 times, resulting in a remainder of 29.
Use 4 as the next digit of our solution. 
Result so far: 4.0
The remainder is 29 after subtracting 340 from 369.
Append the next digit (8) from the dividend to 29 and continue with: 298 / 85

Advancing to step 4:
298 divided by 85 is 3 with a remainder of 43.
The next digit of our result is 3. 
Result so far: 43.0
If we take 255 away from 298, we end up with 43.
Include the next digit (8) from the dividend after 43, then repeat: 438 / 85

Advancing to step 5:
438 divided by 85 is 5 with a remainder of 13.
Use 5 as the next digit of our solution. 
Result so far: 435.0
If we take 425 away from 438, we end up with 13.
Grab the next digit (0) from the dividend, add it to 13, then carry on: 130 / 85

Step 6:
85 can be fit into 130 1 times, resulting in a remainder of 45.
Use 1 as the next digit of our solution. 
Result so far: 4351.0
If we take 85 away from 130, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 7:
85 can be fit into 450 5 times, resulting in a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 4351.5
The remainder is 25 after subtracting 425 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 8:
When dividing 250 by 85, we get 2 with a remainder of 80.
Put 2 as the next digit of the answer. 
Result so far: 4351.52
Subtracting 170 from 250 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 9:
The number 85 fits into 800 9 times, leaving a remainder of 35.
The next digit of our result is 9. 
Result so far: 4351.529
Subtract 765 from 800 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 10:
85 goes into 350 4 times with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 4351.5294
If we subtract 340 from 350, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 11:
100 divided by 85 is 1 with a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 4351.52941
If we subtract 85 from 100, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 12:
The number 85 fits into 150 1 times, leaving a remainder of 65.
Record the quotient 1 as the next digit in the result. 
Result so far: 4351.529411
Subtracting 85 from 150 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

In conclusion, the division gives 4351.529411 with a balance of 6.5e-06.