18770452 divided by 121 
The aim is to understand the frequency of 121 in 18770452.

On to step 1:
1 divided by 121 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 121

On to step 2:
When dividing 18 by 121, we get 0 with a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 18 and we're left with 18.
Bring next digit (7) of the dividend behind the 18 and repeat the process: 187 / 121

Going ahead to step 3:
If we divide 187 by 121, we get 1 and a remainder of 66.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 121 from 187 to get 66.
Include the next digit (7) from the dividend after 66, then repeat: 667 / 121

Moving on to step 4:
If we divide 667 by 121, we get 5 and a remainder of 62.
Write down 5 as next digit of the result. 
Result so far: 15.0
Subtracting 605 from 667 leaves us with 62.
Bring next digit (0) of the dividend behind the 62 and repeat the process: 620 / 121

Advancing to step 5:
620 divided by 121 is 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 155.0
Subtract 605 from 620 to get 15.
Bring next digit (4) of the dividend behind the 15 and repeat the process: 154 / 121

Advancing to step 6:
When dividing 154 by 121, we get 1 with a remainder of 33.
Put 1 as the next digit of the answer. 
Result so far: 1551.0
Deduct 121 from 154 and we're left with 33.
Bring next digit (5) of the dividend behind the 33 and repeat the process: 335 / 121

Let's proceed to step 7:
When dividing 335 by 121, we get 2 with a remainder of 93.
Record the quotient 2 as the next digit in the result. 
Result so far: 15512.0
If we take 242 away from 335, we end up with 93.
Grab the next digit (2) from the dividend, add it to 93, then carry on: 932 / 121

Going ahead to step 8:
932 divided by 121 is 7 with a remainder of 85.
Record the quotient 7 as the next digit in the result. 
Result so far: 155127.0
If we subtract 847 from 932, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

On to step 9:
850 divided by 121 is 7 with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 155127.7
Subtract 847 from 850 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 10:
The number 121 fits into 30 0 times, leaving a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 155127.7
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 11:
300 divided by 121 is 2 with a remainder of 58.
Put 2 as the next digit of the answer. 
Result so far: 155127.702
If we take 242 away from 300, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 12:
580 divided by 121 is 4 with a remainder of 96.
Put 4 as the next digit of the answer. 
Result so far: 155127.7024
Subtracting 484 from 580 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 13:
The number 121 fits into 960 7 times, leaving a remainder of 113.
The next digit of our result is 7. 
Result so far: 155127.70247
If we take 847 away from 960, we end up with 113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

Moving on to step 14:
The number 121 fits into 1130 9 times, leaving a remainder of 41.
Write down 9 as next digit of the result. 
Result so far: 155127.702479
Subtracting 1089 from 1130 leaves us 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 15:
When dividing 410 by 121, we get 3 with a remainder of 47.
Record the quotient 3 as the next digit in the result. 
Result so far: 155127.7024793
Subtracting 363 from 410 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 16:
121 goes into 470 3 times with a remainder of 107.
The next digit of our result is 3. 
Result so far: 155127.70247933
Subtract 363 from 470 to get 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

The final result is 155127.70247933 with a remainder of 1.07e-07.