We look at the division of 51631969 by 122 
The aim is to understand the frequency of 122 in 51631969.

Step 1:
5 divided by 122 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 122

Step 2:
When dividing 51 by 122, we get 0 with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Include the next digit (6) from the dividend after 51, then repeat: 516 / 122

Going ahead to step 3:
If we divide 516 by 122, we get 4 and a remainder of 28.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 488 away from 516, we end up with 28.
Bring next digit (3) of the dividend behind the 28 and repeat the process: 283 / 122

Let's proceed to step 4:
The number 122 fits into 283 2 times, leaving a remainder of 39.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
If we take 244 away from 283, we end up with 39.
Append the next digit (1) from the dividend to 39 and continue with: 391 / 122

On to step 5:
When dividing 391 by 122, we get 3 with a remainder of 25.
Put 3 as the next digit of the answer. 
Result so far: 423.0
If we take 366 away from 391, we end up with 25.
Append the next digit (9) from the dividend to 25 and continue with: 259 / 122

Going ahead to step 6:
If we divide 259 by 122, we get 2 and a remainder of 15.
Write down 2 as next digit of the result. 
Result so far: 4232.0
The remainder is 15 after subtracting 244 from 259.
Include the next digit (6) from the dividend after 15, then repeat: 156 / 122

On to step 7:
The number 122 fits into 156 1 times, leaving a remainder of 34.
Record the quotient 1 as the next digit in the result. 
Result so far: 42321.0
The remainder is 34 after subtracting 122 from 156.
Append the next digit (9) from the dividend to 34 and continue with: 349 / 122

Going ahead to step 8:
349 divided by 122 is 2 with a remainder of 105.
The next digit of our result is 2. 
Result so far: 423212.0
If we take 244 away from 349, we end up with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Step 9:
The number 122 fits into 1050 8 times, leaving a remainder of 74.
The number 8 becomes the next digit in our result. 
Result so far: 423212.8
If we take 976 away from 1050, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 10:
If we divide 740 by 122, we get 6 and a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 423212.86
Deduct 732 from 740 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 11:
The number 122 fits into 80 0 times, leaving a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 423212.86
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 12:
The number 122 fits into 800 6 times, leaving a remainder of 68.
The number 6 becomes the next digit in our result. 
Result so far: 423212.8606
If we take 732 away from 800, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Let's proceed to step 13:
If we divide 680 by 122, we get 5 and a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 423212.86065
If we take 610 away from 680, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 14:
700 divided by 122 is 5 with a remainder of 90.
The next digit of our result is 5. 
Result so far: 423212.860655
Subtract 610 from 700 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

The quotient of the division is 423212.860655, and the remainder is 9e-06.