68539929 ÷ 121 
The aim is to understand the frequency of 121 in 68539929.

Going ahead to step 1:
When dividing 6 by 121, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 121

Moving on to step 2:
121 goes into 68 0 times with a remainder of 68.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 68 after subtracting 0 from 68.
Include the next digit (5) from the dividend after 68, then repeat: 685 / 121

Let's proceed to step 3:
If we divide 685 by 121, we get 5 and a remainder of 80.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we take 605 away from 685, we end up with 80.
Grab the next digit (3) from the dividend, add it to 80, then carry on: 803 / 121

Step 4:
When dividing 803 by 121, we get 6 with a remainder of 77.
The next digit of our result is 6. 
Result so far: 56.0
Subtracting 726 from 803 leaves us with 77.
Bring next digit (9) of the dividend behind the 77 and repeat the process: 779 / 121

Step 5:
If we divide 779 by 121, we get 6 and a remainder of 53.
Write down 6 as next digit of the result. 
Result so far: 566.0
Subtract 726 from 779 to get 53.
Include the next digit (9) from the dividend after 53, then repeat: 539 / 121

On to step 6:
121 can be fit into 539 4 times, resulting in a remainder of 55.
Record the quotient 4 as the next digit in the result. 
Result so far: 5664.0
Deduct 484 from 539 and we're left with 55.
Fetch the next digit (2) from the dividend, attach it to 55 and continue: 552 / 121

On to step 7:
552 divided by 121 is 4 with a remainder of 68.
The next digit of our result is 4. 
Result so far: 56644.0
If we subtract 484 from 552, we get 68.
Include the next digit (9) from the dividend after 68, then repeat: 689 / 121

Going ahead to step 8:
The number 121 fits into 689 5 times, leaving a remainder of 84.
Use 5 as the next digit of our solution. 
Result so far: 566445.0
Deduct 605 from 689 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 9:
121 goes into 840 6 times with a remainder of 114.
The number 6 becomes the next digit in our result. 
Result so far: 566445.6
The remainder is 114 after subtracting 726 from 840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

On to step 10:
1140 divided by 121 is 9 with a remainder of 51.
The next digit of our result is 9. 
Result so far: 566445.69
Subtract 1089 from 1140 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 11:
121 can be fit into 510 4 times, resulting in a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 566445.694
If we subtract 484 from 510, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 12:
If we divide 260 by 121, we get 2 and a remainder of 18.
The next digit of our result is 2. 
Result so far: 566445.6942
If we take 242 away from 260, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 13:
121 can be fit into 180 1 times, resulting in a remainder of 59.
The number 1 becomes the next digit in our result. 
Result so far: 566445.69421
If we take 121 away from 180, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 14:
The number 121 fits into 590 4 times, leaving a remainder of 106.
The next digit of our result is 4. 
Result so far: 566445.694214
Subtracting 484 from 590 leaves us with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Let's proceed to step 15:
121 can be fit into 1060 8 times, resulting in a remainder of 92.
Write down 8 as next digit of the result. 
Result so far: 566445.6942148
Deduct 968 from 1060 and we're left with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Let's proceed to step 16:
121 goes into 920 7 times with a remainder of 73.
Use 7 as the next digit of our solution. 
Result so far: 566445.69421487
Deduct 847 from 920 and we're left with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

After the division, we end up with 566445.69421487 and a remainder of 7.3e-08.