We're dividing 61484769 by 51 
The aim is to understand the frequency of 51 in 61484769.

Let's proceed to step 1:
6 divided by 51 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 51

Let's proceed to step 2:
51 goes into 61 1 times with a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 51 from 61, we get 10.
Grab the next digit (4) from the dividend, add it to 10, then carry on: 104 / 51

Advancing to step 3:
The number 51 fits into 104 2 times, leaving a remainder of 2.
The next digit of our result is 2. 
Result so far: 12.0
If we subtract 102 from 104, we get 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 51

Step 4:
51 goes into 28 0 times with a remainder of 28.
The next digit of our result is 0. 
Result so far: 120.0
Subtracting 0 from 28 leaves us with 28.
Append the next digit (4) from the dividend to 28 and continue with: 284 / 51

On to step 5:
When dividing 284 by 51, we get 5 with a remainder of 29.
Write down 5 as next digit of the result. 
Result so far: 1205.0
Subtract 255 from 284 to get 29.
Take the next digit (7) from the dividend and append it to 29, then repeat: 297 / 51

Let's proceed to step 6:
51 goes into 297 5 times with a remainder of 42.
Put 5 as the next digit of the answer. 
Result so far: 12055.0
If we take 255 away from 297, we end up with 42.
Take the next digit (6) from the dividend and append it to 42, then repeat: 426 / 51

On to step 7:
426 divided by 51 is 8 with a remainder of 18.
Record the quotient 8 as the next digit in the result. 
Result so far: 120558.0
Deduct 408 from 426 and we're left with 18.
Fetch the next digit (9) from the dividend, attach it to 18 and continue: 189 / 51

Let's proceed to step 8:
When dividing 189 by 51, we get 3 with a remainder of 36.
Use 3 as the next digit of our solution. 
Result so far: 1205583.0
Subtract 153 from 189 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.

Step 9:
When dividing 360 by 51, we get 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 1205583.7
Subtract 357 from 360 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 10:
51 can be fit into 30 0 times, resulting in a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 1205583.7
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 11:
51 goes into 300 5 times with a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 1205583.705
If we subtract 255 from 300, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 12:
If we divide 450 by 51, we get 8 and a remainder of 42.
The next digit of our result is 8. 
Result so far: 1205583.7058
If we take 408 away from 450, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 13:
51 can be fit into 420 8 times, resulting in a remainder of 12.
The next digit of our result is 8. 
Result so far: 1205583.70588
If we take 408 away from 420, we end up 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.

The final result is 1205583.70588 with a remainder of 1.2e-05.