We look at the division of 571485 by 84 
The aim is to understand the frequency of 84 in 571485.

Step 1:
84 can be fit into 5 0 times, resulting in a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (7) from the dividend to 5 and continue with: 57 / 84

Going ahead to step 2:
84 goes into 57 0 times with a remainder of 57.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 57 after subtracting 0 from 57.
Grab the next digit (1) from the dividend, add it to 57, then carry on: 571 / 84

On to step 3:
When dividing 571 by 84, we get 6 with a remainder of 67.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 67 after subtracting 504 from 571.
Include the next digit (4) from the dividend after 67, then repeat: 674 / 84

On to step 4:
674 divided by 84 is 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 68.0
If we subtract 672 from 674, we get 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 84

Advancing to step 5:
84 goes into 28 0 times with a remainder of 28.
The next digit of our result is 0. 
Result so far: 680.0
Deduct 0 from 28 and we're left with 28.
Take the next digit (5) from the dividend and append it to 28, then repeat: 285 / 84

Going ahead to step 6:
285 divided by 84 is 3 with a remainder of 33.
Write down 3 as next digit of the result. 
Result so far: 6803.0
Subtracting 252 from 285 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 7:
If we divide 330 by 84, we get 3 and a remainder of 78.
The number 3 becomes the next digit in our result. 
Result so far: 6803.3
Subtract 252 from 330 to get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Step 8:
84 can be fit into 780 9 times, resulting in a remainder of 24.
The number 9 becomes the next digit in our result. 
Result so far: 6803.39
If we take 756 away from 780, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 9:
84 can be fit into 240 2 times, resulting in a remainder of 72.
The next digit of our result is 2. 
Result so far: 6803.392
Deduct 168 from 240 and we're left 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.

Let's proceed to step 10:
If we divide 720 by 84, we get 8 and a remainder of 48.
Use 8 as the next digit of our solution. 
Result so far: 6803.3928
Subtract 672 from 720 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 11:
480 divided by 84 is 5 with a remainder of 60.
The next digit of our result is 5. 
Result so far: 6803.39285
The remainder is 60 after subtracting 420 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 12:
84 can be fit into 600 7 times, resulting in a remainder of 12.
Put 7 as the next digit of the answer. 
Result so far: 6803.392857
Subtract 588 from 600 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 13:
The number 84 fits into 120 1 times, leaving a remainder of 36.
The number 1 becomes the next digit in our result. 
Result so far: 6803.3928571
Deduct 84 from 120 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 14:
The number 84 fits into 360 4 times, leaving a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 6803.39285714
If we take 336 away from 360, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

In conclusion, the division gives 6803.39285714 with a balance of 2.4e-08.