We're dividing 413501 by 51 
The aim is to understand the frequency of 51 in 413501.

On to step 1:
51 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (1) of the dividend behind the 4 and repeat the process: 41 / 51

Advancing to step 2:
If we divide 41 by 51, we get 0 and a remainder of 41.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 41, we end up with 41.
Append the next digit (3) from the dividend to 41 and continue with: 413 / 51

Let's proceed to step 3:
51 can be fit into 413 8 times, resulting in a remainder of 5.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
If we subtract 408 from 413, we get 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 51

Going ahead to step 4:
51 goes into 55 1 times with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 81.0
The remainder is 4 after subtracting 51 from 55.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 51

Moving on to step 5:
If we divide 40 by 51, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 810.0
Subtract 0 from 40 to get 40.
Bring next digit (1) of the dividend behind the 40 and repeat the process: 401 / 51

Going ahead to step 6:
51 goes into 401 7 times with a remainder of 44.
Record the quotient 7 as the next digit in the result. 
Result so far: 8107.0
Deduct 357 from 401 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 7:
51 can be fit into 440 8 times, resulting in a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 8107.8
Subtract 408 from 440 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 8:
51 can be fit into 320 6 times, resulting in a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 8107.86
Subtract 306 from 320 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 9:
The number 51 fits into 140 2 times, leaving a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 8107.862
Subtracting 102 from 140 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 10:
380 divided by 51 is 7 with a remainder of 23.
Write down 7 as next digit of the result. 
Result so far: 8107.8627
Subtracting 357 from 380 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 11:
51 goes into 230 4 times with a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 8107.86274
If we subtract 204 from 230, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 12:
51 goes into 260 5 times with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 8107.862745
Subtracting 255 from 260 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 13:
If we divide 50 by 51, we get 0 and a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 8107.862745
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 14:
If we divide 500 by 51, we get 9 and a remainder of 41.
The number 9 becomes the next digit in our result. 
Result so far: 8107.86274509
Subtracting 459 from 500 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Our division results in 8107.86274509 with a remaining 4.1e-08.