We're dividing 435146 by 51 
The aim is to understand the frequency of 51 in 435146.

Advancing to step 1:
If we divide 4 by 51, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 51

Moving on to step 2:
If we divide 43 by 51, we get 0 and a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Include the next digit (5) from the dividend after 43, then repeat: 435 / 51

Advancing to step 3:
51 goes into 435 8 times with a remainder of 27.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtracting 408 from 435 leaves us with 27.
Bring next digit (1) of the dividend behind the 27 and repeat the process: 271 / 51

Advancing to step 4:
271 divided by 51 is 5 with a remainder of 16.
Put 5 as the next digit of the answer. 
Result so far: 85.0
Deduct 255 from 271 and we're left with 16.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 51

Advancing to step 5:
If we divide 164 by 51, we get 3 and a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 853.0
Deduct 153 from 164 and we're left with 11.
Grab the next digit (6) from the dividend, add it to 11, then carry on: 116 / 51

Moving on to step 6:
If we divide 116 by 51, we get 2 and a remainder of 14.
The next digit of our result is 2. 
Result so far: 8532.0
If we take 102 away from 116, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 7:
The number 51 fits into 140 2 times, leaving a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 8532.2
The remainder is 38 after subtracting 102 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 8:
51 can be fit into 380 7 times, resulting in a remainder of 23.
Write down 7 as next digit of the result. 
Result so far: 8532.27
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.

Step 9:
When dividing 230 by 51, we get 4 with a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 8532.274
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.

On to step 10:
If we divide 260 by 51, we get 5 and a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 8532.2745
The remainder is 5 after subtracting 255 from 260.
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 11:
When dividing 50 by 51, we get 0 with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 8532.2745
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 12:
The number 51 fits into 500 9 times, leaving a remainder of 41.
The number 9 becomes the next digit in our result. 
Result so far: 8532.274509
The remainder is 41 after subtracting 459 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

On to step 13:
410 divided by 51 is 8 with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 8532.2745098
If we subtract 408 from 410, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 14:
If we divide 20 by 51, we get 0 and a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 8532.2745098
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 8532.2745098 with a remaining 2e-08.