We're dividing 574519 by 84 
The aim is to understand the frequency of 84 in 574519.

Advancing to step 1:
When dividing 5 by 84, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 84

Moving on to step 2:
When dividing 57 by 84, we get 0 with a remainder of 57.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 57 after subtracting 0 from 57.
Bring next digit (4) of the dividend behind the 57 and repeat the process: 574 / 84

Moving on to step 3:
574 divided by 84 is 6 with a remainder of 70.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we subtract 504 from 574, we get 70.
Fetch the next digit (5) from the dividend, attach it to 70 and continue: 705 / 84

Going ahead to step 4:
If we divide 705 by 84, we get 8 and a remainder of 33.
Use 8 as the next digit of our solution. 
Result so far: 68.0
If we take 672 away from 705, we end up with 33.
Include the next digit (1) from the dividend after 33, then repeat: 331 / 84

Step 5:
84 can be fit into 331 3 times, resulting in a remainder of 79.
Use 3 as the next digit of our solution. 
Result so far: 683.0
Subtract 252 from 331 to get 79.
Take the next digit (9) from the dividend and append it to 79, then repeat: 799 / 84

On to step 6:
The number 84 fits into 799 9 times, leaving a remainder of 43.
Put 9 as the next digit of the answer. 
Result so far: 6839.0
If we take 756 away from 799, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

On to step 7:
The number 84 fits into 430 5 times, leaving a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 6839.5
Subtract 420 from 430 to 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.

Let's proceed to step 8:
84 can be fit into 100 1 times, resulting in a remainder of 16.
Record the quotient 1 as the next digit in the result. 
Result so far: 6839.51
Subtracting 84 from 100 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 9:
If we divide 160 by 84, we get 1 and a remainder of 76.
Write down 1 as next digit of the result. 
Result so far: 6839.511
Subtract 84 from 160 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The final outcome is 6839.511, with a leftover of 0.0076.