We're dividing 519854 by 84 
The aim is to understand the frequency of 84 in 519854.

Advancing to step 1:
If we divide 5 by 84, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 84

Step 2:
When dividing 51 by 84, we get 0 with a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Grab the next digit (9) from the dividend, add it to 51, then carry on: 519 / 84

On to step 3:
84 goes into 519 6 times with a remainder of 15.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we take 504 away from 519, we end up with 15.
Take the next digit (8) from the dividend and append it to 15, then repeat: 158 / 84

Going ahead to step 4:
The number 84 fits into 158 1 times, leaving a remainder of 74.
The next digit of our result is 1. 
Result so far: 61.0
Subtracting 84 from 158 leaves us with 74.
Grab the next digit (5) from the dividend, add it to 74, then carry on: 745 / 84

Advancing to step 5:
84 goes into 745 8 times with a remainder of 73.
Record the quotient 8 as the next digit in the result. 
Result so far: 618.0
If we take 672 away from 745, we end up with 73.
Fetch the next digit (4) from the dividend, attach it to 73 and continue: 734 / 84

Let's proceed to step 6:
84 can be fit into 734 8 times, resulting in a remainder of 62.
The number 8 becomes the next digit in our result. 
Result so far: 6188.0
The remainder is 62 after subtracting 672 from 734.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 7:
If we divide 620 by 84, we get 7 and a remainder of 32.
The next digit of our result is 7. 
Result so far: 6188.7
Subtracting 588 from 620 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 8:
84 can be fit into 320 3 times, resulting in a remainder of 68.
The number 3 becomes the next digit in our result. 
Result so far: 6188.73
The remainder is 68 after subtracting 252 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 9:
If we divide 680 by 84, we get 8 and a remainder of 8.
The next digit of our result is 8. 
Result so far: 6188.738
If we subtract 672 from 680, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
80 divided by 84 is 0 with a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 6188.738
Subtract 0 from 80 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 11:
84 goes into 800 9 times with a remainder of 44.
Record the quotient 9 as the next digit in the result. 
Result so far: 6188.73809
If we subtract 756 from 800, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 12:
If we divide 440 by 84, we get 5 and a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 6188.738095
Deduct 420 from 440 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 13:
200 divided by 84 is 2 with a remainder of 32.
The next digit of our result is 2. 
Result so far: 6188.7380952
Subtracting 168 from 200 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 14:
When dividing 320 by 84, we get 3 with a remainder of 68.
Use 3 as the next digit of our solution. 
Result so far: 6188.73809523
If we take 252 away from 320, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

The final outcome is 6188.73809523, with a leftover of 6.8e-08.