45488961 ÷ 122 
The aim is to understand the frequency of 122 in 45488961.

Going ahead to step 1:
When dividing 4 by 122, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 122

Moving on to step 2:
If we divide 45 by 122, we get 0 and a remainder of 45.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 45, we end up with 45.
Bring next digit (4) of the dividend behind the 45 and repeat the process: 454 / 122

Going ahead to step 3:
122 goes into 454 3 times with a remainder of 88.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 366 from 454 to get 88.
Include the next digit (8) from the dividend after 88, then repeat: 888 / 122

Let's proceed to step 4:
888 divided by 122 is 7 with a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 37.0
Deduct 854 from 888 and we're left with 34.
Include the next digit (8) from the dividend after 34, then repeat: 348 / 122

Advancing to step 5:
When dividing 348 by 122, we get 2 with a remainder of 104.
Use 2 as the next digit of our solution. 
Result so far: 372.0
The remainder is 104 after subtracting 244 from 348.
Bring next digit (9) of the dividend behind the 104 and repeat the process: 1049 / 122

Step 6:
If we divide 1049 by 122, we get 8 and a remainder of 73.
Write down 8 as next digit of the result. 
Result so far: 3728.0
If we subtract 976 from 1049, we get 73.
Fetch the next digit (6) from the dividend, attach it to 73 and continue: 736 / 122

On to step 7:
When dividing 736 by 122, we get 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 37286.0
Subtract 732 from 736 to get 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 122

Advancing to step 8:
122 goes into 41 0 times with a remainder of 41.
Put 0 as the next digit of the answer. 
Result so far: 372860.0
Deduct 0 from 41 and we're left 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.

Let's proceed to step 9:
122 goes into 410 3 times with a remainder of 44.
The next digit of our result is 3. 
Result so far: 372860.3
Deduct 366 from 410 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.

On to step 10:
The number 122 fits into 440 3 times, leaving a remainder of 74.
The number 3 becomes the next digit in our result. 
Result so far: 372860.33
Subtract 366 from 440 to get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Our division results in 372860.33 with a remaining 0.074.