We look at the division of 428181 by 51 
The aim is to understand the frequency of 51 in 428181.

Let's proceed to step 1:
If we divide 4 by 51, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 51

Moving on to step 2:
When dividing 42 by 51, we get 0 with a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Append the next digit (8) from the dividend to 42 and continue with: 428 / 51

Advancing to step 3:
51 goes into 428 8 times with a remainder of 20.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 408 from 428 leaves us with 20.
Fetch the next digit (1) from the dividend, attach it to 20 and continue: 201 / 51

Moving on to step 4:
When dividing 201 by 51, we get 3 with a remainder of 48.
Write down 3 as next digit of the result. 
Result so far: 83.0
The remainder is 48 after subtracting 153 from 201.
Fetch the next digit (8) from the dividend, attach it to 48 and continue: 488 / 51

Let's proceed to step 5:
The number 51 fits into 488 9 times, leaving a remainder of 29.
The next digit of our result is 9. 
Result so far: 839.0
Subtract 459 from 488 to get 29.
Fetch the next digit (1) from the dividend, attach it to 29 and continue: 291 / 51

Advancing to step 6:
291 divided by 51 is 5 with a remainder of 36.
Write down 5 as next digit of the result. 
Result so far: 8395.0
If we take 255 away from 291, we end up 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 7:
360 divided by 51 is 7 with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 8395.7
If we subtract 357 from 360, we 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.

Moving on to step 8:
51 can be fit into 30 0 times, resulting in a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 8395.7
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.

Moving on to step 9:
If we divide 300 by 51, we get 5 and a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 8395.705
Subtract 255 from 300 to 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.

Let's proceed to step 10:
51 can be fit into 450 8 times, resulting in a remainder of 42.
The number 8 becomes the next digit in our result. 
Result so far: 8395.7058
Subtracting 408 from 450 leaves us 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.

On to step 11:
420 divided by 51 is 8 with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 8395.70588
Subtracting 408 from 420 leaves us 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 quotient of the division is 8395.70588, and the remainder is 1.2e-05.