We look at the division of 48651 by 84 
The aim is to understand the frequency of 84 in 48651.

Going ahead to step 1:
When dividing 4 by 84, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 84

Let's proceed to step 2:
If we divide 48 by 84, we get 0 and a remainder of 48.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 48, we get 48.
Take the next digit (6) from the dividend and append it to 48, then repeat: 486 / 84

Advancing to step 3:
84 goes into 486 5 times with a remainder of 66.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we take 420 away from 486, we end up with 66.
Bring next digit (5) of the dividend behind the 66 and repeat the process: 665 / 84

Moving on to step 4:
665 divided by 84 is 7 with a remainder of 77.
The number 7 becomes the next digit in our result. 
Result so far: 57.0
Subtracting 588 from 665 leaves us with 77.
Take the next digit (1) from the dividend and append it to 77, then repeat: 771 / 84

Step 5:
84 goes into 771 9 times with a remainder of 15.
Record the quotient 9 as the next digit in the result. 
Result so far: 579.0
Deduct 756 from 771 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 6:
84 can be fit into 150 1 times, resulting in a remainder of 66.
The number 1 becomes the next digit in our result. 
Result so far: 579.1
If we take 84 away from 150, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 7:
660 divided by 84 is 7 with a remainder of 72.
Record the quotient 7 as the next digit in the result. 
Result so far: 579.17
If we take 588 away from 660, we end up 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.

Going ahead to step 8:
If we divide 720 by 84, we get 8 and a remainder of 48.
The number 8 becomes the next digit in our result. 
Result so far: 579.178
If we take 672 away from 720, we end up 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.

On to step 9:
84 can be fit into 480 5 times, resulting in a remainder of 60.
Use 5 as the next digit of our solution. 
Result so far: 579.1785
Subtract 420 from 480 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.

Step 10:
84 goes into 600 7 times with a remainder of 12.
Record the quotient 7 as the next digit in the result. 
Result so far: 579.17857
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.

On to step 11:
84 goes into 120 1 times with a remainder of 36.
Put 1 as the next digit of the answer. 
Result so far: 579.178571
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 12:
If we divide 360 by 84, we get 4 and a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 579.1785714
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.

Going ahead to step 13:
If we divide 240 by 84, we get 2 and a remainder of 72.
Use 2 as the next digit of our solution. 
Result so far: 579.17857142
If we take 168 away from 240, we end up 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.

The final outcome is 579.17857142, with a leftover of 7.2e-08.