43818643 ÷ 122 
The aim is to understand the frequency of 122 in 43818643.

On to step 1:
4 divided by 122 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 122

Step 2:
122 goes into 43 0 times with a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Bring next digit (8) of the dividend behind the 43 and repeat the process: 438 / 122

On to step 3:
When dividing 438 by 122, we get 3 with a remainder of 72.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 72 after subtracting 366 from 438.
Include the next digit (1) from the dividend after 72, then repeat: 721 / 122

Advancing to step 4:
If we divide 721 by 122, we get 5 and a remainder of 111.
Put 5 as the next digit of the answer. 
Result so far: 35.0
If we subtract 610 from 721, we get 111.
Include the next digit (8) from the dividend after 111, then repeat: 1118 / 122

Advancing to step 5:
When dividing 1118 by 122, we get 9 with a remainder of 20.
Record the quotient 9 as the next digit in the result. 
Result so far: 359.0
Subtract 1098 from 1118 to get 20.
Fetch the next digit (6) from the dividend, attach it to 20 and continue: 206 / 122

Moving on to step 6:
206 divided by 122 is 1 with a remainder of 84.
Record the quotient 1 as the next digit in the result. 
Result so far: 3591.0
Subtract 122 from 206 to get 84.
Append the next digit (4) from the dividend to 84 and continue with: 844 / 122

On to step 7:
If we divide 844 by 122, we get 6 and a remainder of 112.
Use 6 as the next digit of our solution. 
Result so far: 35916.0
Deduct 732 from 844 and we're left with 112.
Take the next digit (3) from the dividend and append it to 112, then repeat: 1123 / 122

Let's proceed to step 8:
When dividing 1123 by 122, we get 9 with a remainder of 25.
Record the quotient 9 as the next digit in the result. 
Result so far: 359169.0
If we take 1098 away from 1123, 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.

Moving on to step 9:
122 goes into 250 2 times with a remainder of 6.
The next digit of our result is 2. 
Result so far: 359169.2
If we take 244 away from 250, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 10:
The number 122 fits into 60 0 times, leaving a remainder of 60.
The next digit of our result is 0. 
Result so far: 359169.2
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 11:
If we divide 600 by 122, we get 4 and a remainder of 112.
The next digit of our result is 4. 
Result so far: 359169.204
If we subtract 488 from 600, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Going ahead to step 12:
If we divide 1120 by 122, we get 9 and a remainder of 22.
The number 9 becomes the next digit in our result. 
Result so far: 359169.2049
Subtract 1098 from 1120 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 13:
122 goes into 220 1 times with a remainder of 98.
The next digit of our result is 1. 
Result so far: 359169.20491
The remainder is 98 after subtracting 122 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Advancing to step 14:
When dividing 980 by 122, we get 8 with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 359169.204918
Deduct 976 from 980 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 15:
40 divided by 122 is 0 with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 359169.204918
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 16:
If we divide 400 by 122, we get 3 and a remainder of 34.
Write down 3 as next digit of the result. 
Result so far: 359169.20491803
If we take 366 away from 400, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

The final result is 359169.20491803 with a remainder of 3.4e-08.