81995762 ÷ 121 
The aim is to understand the frequency of 121 in 81995762.

Step 1:
When dividing 8 by 121, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 121

Let's proceed to step 2:
When dividing 81 by 121, we get 0 with a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Bring next digit (9) of the dividend behind the 81 and repeat the process: 819 / 121

Let's proceed to step 3:
If we divide 819 by 121, we get 6 and a remainder of 93.
The next digit of our result is 6. 
Result so far: 6.0
The remainder is 93 after subtracting 726 from 819.
Include the next digit (9) from the dividend after 93, then repeat: 939 / 121

Moving on to step 4:
121 can be fit into 939 7 times, resulting in a remainder of 92.
The next digit of our result is 7. 
Result so far: 67.0
If we subtract 847 from 939, we get 92.
Grab the next digit (5) from the dividend, add it to 92, then carry on: 925 / 121

Let's proceed to step 5:
The number 121 fits into 925 7 times, leaving a remainder of 78.
The number 7 becomes the next digit in our result. 
Result so far: 677.0
If we subtract 847 from 925, we get 78.
Take the next digit (7) from the dividend and append it to 78, then repeat: 787 / 121

Let's proceed to step 6:
The number 121 fits into 787 6 times, leaving a remainder of 61.
Put 6 as the next digit of the answer. 
Result so far: 6776.0
If we take 726 away from 787, we end up with 61.
Grab the next digit (6) from the dividend, add it to 61, then carry on: 616 / 121

Let's proceed to step 7:
121 can be fit into 616 5 times, resulting in a remainder of 11.
Record the quotient 5 as the next digit in the result. 
Result so far: 67765.0
Subtract 605 from 616 to get 11.
Grab the next digit (2) from the dividend, add it to 11, then carry on: 112 / 121

Advancing to step 8:
121 can be fit into 112 0 times, resulting in a remainder of 112.
Use 0 as the next digit of our solution. 
Result so far: 677650.0
If we take 0 away from 112, we end up with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Let's proceed to step 9:
When dividing 1120 by 121, we get 9 with a remainder of 31.
Write down 9 as next digit of the result. 
Result so far: 677650.9
Subtract 1089 from 1120 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 10:
310 divided by 121 is 2 with a remainder of 68.
Put 2 as the next digit of the answer. 
Result so far: 677650.92
Subtract 242 from 310 to get 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 11:
If we divide 680 by 121, we get 5 and a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 677650.925
If we take 605 away from 680, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 12:
When dividing 750 by 121, we get 6 with a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 677650.9256
The remainder is 24 after subtracting 726 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 13:
When dividing 240 by 121, we get 1 with a remainder of 119.
The next digit of our result is 1. 
Result so far: 677650.92561
Deduct 121 from 240 and we're left with 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Step 14:
If we divide 1190 by 121, we get 9 and a remainder of 101.
Put 9 as the next digit of the answer. 
Result so far: 677650.925619
If we subtract 1089 from 1190, we get 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Step 15:
121 can be fit into 1010 8 times, resulting in a remainder of 42.
The number 8 becomes the next digit in our result. 
Result so far: 677650.9256198
Subtracting 968 from 1010 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 16:
When dividing 420 by 121, we get 3 with a remainder of 57.
Put 3 as the next digit of the answer. 
Result so far: 677650.92561983
Subtract 363 from 420 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

The final outcome is 677650.92561983, with a leftover of 5.7e-08.