Let's divide 123646 by 51
The aim is to understand the frequency of 51 in 123646.

Going ahead to step 1:
51 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 51

Moving on to step 2:
When dividing 12 by 51, we get 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Fetch the next digit (3) from the dividend, attach it to 12 and continue: 123 / 51

Moving on to step 3:
51 can be fit into 123 2 times, resulting in a remainder of 21.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 21 after subtracting 102 from 123.
Append the next digit (6) from the dividend to 21 and continue with: 216 / 51

Going ahead to step 4:
216 divided by 51 is 4 with a remainder of 12.
The next digit of our result is 4. 
Result so far: 24.0
Subtract 204 from 216 to get 12.
Include the next digit (4) from the dividend after 12, then repeat: 124 / 51

On to step 5:
When dividing 124 by 51, we get 2 with a remainder of 22.
Record the quotient 2 as the next digit in the result. 
Result so far: 242.0
If we take 102 away from 124, we end up with 22.
Fetch the next digit (6) from the dividend, attach it to 22 and continue: 226 / 51

Advancing to step 6:
If we divide 226 by 51, we get 4 and a remainder of 22.
Write down 4 as next digit of the result. 
Result so far: 2424.0
Subtract 204 from 226 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 7:
If we divide 220 by 51, we get 4 and a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 2424.4
The remainder is 16 after subtracting 204 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 8:
The number 51 fits into 160 3 times, leaving a remainder of 7.
The next digit of our result is 3. 
Result so far: 2424.43
If we subtract 153 from 160, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 9:
The number 51 fits into 70 1 times, leaving a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 2424.431
The remainder is 19 after subtracting 51 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 10:
190 divided by 51 is 3 with a remainder of 37.
Use 3 as the next digit of our solution. 
Result so far: 2424.4313
If we subtract 153 from 190, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 11:
51 goes into 370 7 times with a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 2424.43137
Deduct 357 from 370 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 12:
51 can be fit into 130 2 times, resulting in a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 2424.431372
If we subtract 102 from 130, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 13:
When dividing 280 by 51, we get 5 with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 2424.4313725
If we take 255 away from 280, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 14:
250 divided by 51 is 4 with a remainder of 46.
The number 4 becomes the next digit in our result. 
Result so far: 2424.43137254
Deduct 204 from 250 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

The final result is 2424.43137254 with a remainder of 4.6e-08.