We're dividing 25133109 by 84 
The aim is to understand the frequency of 84 in 25133109.

Step 1:
When dividing 2 by 84, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 84

Moving on to step 2:
25 divided by 84 is 0 with a remainder of 25.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Include the next digit (1) from the dividend after 25, then repeat: 251 / 84

On to step 3:
The number 84 fits into 251 2 times, leaving a remainder of 83.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 168 from 251 and we're left with 83.
Grab the next digit (3) from the dividend, add it to 83, then carry on: 833 / 84

Step 4:
The number 84 fits into 833 9 times, leaving a remainder of 77.
Put 9 as the next digit of the answer. 
Result so far: 29.0
Deduct 756 from 833 and we're left with 77.
Take the next digit (3) from the dividend and append it to 77, then repeat: 773 / 84

Let's proceed to step 5:
84 can be fit into 773 9 times, resulting in a remainder of 17.
The number 9 becomes the next digit in our result. 
Result so far: 299.0
The remainder is 17 after subtracting 756 from 773.
Append the next digit (1) from the dividend to 17 and continue with: 171 / 84

Let's proceed to step 6:
If we divide 171 by 84, we get 2 and a remainder of 3.
The next digit of our result is 2. 
Result so far: 2992.0
Deduct 168 from 171 and we're left with 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 84

Moving on to step 7:
When dividing 30 by 84, we get 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 29920.0
The remainder is 30 after subtracting 0 from 30.
Append the next digit (9) from the dividend to 30 and continue with: 309 / 84

Let's proceed to step 8:
309 divided by 84 is 3 with a remainder of 57.
Use 3 as the next digit of our solution. 
Result so far: 299203.0
Subtract 252 from 309 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 9:
570 divided by 84 is 6 with a remainder of 66.
Put 6 as the next digit of the answer. 
Result so far: 299203.6
If we subtract 504 from 570, we get 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 10:
When dividing 660 by 84, we get 7 with a remainder of 72.
Use 7 as the next digit of our solution. 
Result so far: 299203.67
Subtract 588 from 660 to get 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 11:
720 divided by 84 is 8 with a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 299203.678
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.

On to step 12:
The number 84 fits into 480 5 times, leaving a remainder of 60.
The number 5 becomes the next digit in our result. 
Result so far: 299203.6785
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.

Going ahead to step 13:
The number 84 fits into 600 7 times, leaving a remainder of 12.
Record the quotient 7 as the next digit in the result. 
Result so far: 299203.67857
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.

On to step 14:
84 goes into 120 1 times with a remainder of 36.
Put 1 as the next digit of the answer. 
Result so far: 299203.678571
Subtracting 84 from 120 leaves us 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.

Going ahead to step 15:
If we divide 360 by 84, we get 4 and a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 299203.6785714
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.

Moving on to step 16:
If we divide 240 by 84, we get 2 and a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 299203.67857142
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.

Our division results in 299203.67857142 with a remaining 7.2e-08.