We're dividing 15516 by 84 
The aim is to understand the frequency of 84 in 15516.

Let's proceed to step 1:
When dividing 1 by 84, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 84

Advancing to step 2:
15 divided by 84 is 0 with a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Append the next digit (5) from the dividend to 15 and continue with: 155 / 84

Advancing to step 3:
84 can be fit into 155 1 times, resulting in a remainder of 71.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 84 away from 155, we end up with 71.
Grab the next digit (1) from the dividend, add it to 71, then carry on: 711 / 84

Let's proceed to step 4:
If we divide 711 by 84, we get 8 and a remainder of 39.
Write down 8 as next digit of the result. 
Result so far: 18.0
If we subtract 672 from 711, we get 39.
Take the next digit (6) from the dividend and append it to 39, then repeat: 396 / 84

On to step 5:
84 can be fit into 396 4 times, resulting in a remainder of 60.
Use 4 as the next digit of our solution. 
Result so far: 184.0
Subtract 336 from 396 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 6:
When dividing 600 by 84, we get 7 with a remainder of 12.
Record the quotient 7 as the next digit in the result. 
Result so far: 184.7
If we subtract 588 from 600, we 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.

Moving on to step 7:
When dividing 120 by 84, we get 1 with a remainder of 36.
The number 1 becomes the next digit in our result. 
Result so far: 184.71
Subtract 84 from 120 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 8:
When dividing 360 by 84, we get 4 with a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 184.714
Subtract 336 from 360 to get 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:
240 divided by 84 is 2 with a remainder of 72.
Use 2 as the next digit of our solution. 
Result so far: 184.7142
Subtracting 168 from 240 leaves us 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.
Write down 8 as next digit of the result. 
Result so far: 184.71428
Deduct 672 from 720 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 11:
When dividing 480 by 84, we get 5 with a remainder of 60.
Write down 5 as next digit of the result. 
Result so far: 184.714285
If we subtract 420 from 480, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 12:
600 divided by 84 is 7 with a remainder of 12.
The number 7 becomes the next digit in our result. 
Result so far: 184.7142857
Deduct 588 from 600 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on 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: 184.71428571
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.

The final result is 184.71428571 with a remainder of 3.6e-08.