Let's divide 10130885 by 121
The aim is to understand the frequency of 121 in 10130885.

Moving on to step 1:
121 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 121

On to step 2:
10 divided by 121 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 10 after subtracting 0 from 10.
Include the next digit (1) from the dividend after 10, then repeat: 101 / 121

Moving on to step 3:
The number 121 fits into 101 0 times, leaving a remainder of 101.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 101 to get 101.
Append the next digit (3) from the dividend to 101 and continue with: 1013 / 121

Let's proceed to step 4:
121 can be fit into 1013 8 times, resulting in a remainder of 45.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 968 from 1013 and we're left with 45.
Bring next digit (0) of the dividend behind the 45 and repeat the process: 450 / 121

On to step 5:
121 can be fit into 450 3 times, resulting in a remainder of 87.
The number 3 becomes the next digit in our result. 
Result so far: 83.0
Subtracting 363 from 450 leaves us with 87.
Grab the next digit (8) from the dividend, add it to 87, then carry on: 878 / 121

Moving on to step 6:
If we divide 878 by 121, we get 7 and a remainder of 31.
Record the quotient 7 as the next digit in the result. 
Result so far: 837.0
Deduct 847 from 878 and we're left with 31.
Take the next digit (8) from the dividend and append it to 31, then repeat: 318 / 121

On to step 7:
When dividing 318 by 121, we get 2 with a remainder of 76.
The next digit of our result is 2. 
Result so far: 8372.0
Subtract 242 from 318 to get 76.
Fetch the next digit (5) from the dividend, attach it to 76 and continue: 765 / 121

Moving on to step 8:
If we divide 765 by 121, we get 6 and a remainder of 39.
The number 6 becomes the next digit in our result. 
Result so far: 83726.0
The remainder is 39 after subtracting 726 from 765.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 9:
390 divided by 121 is 3 with a remainder of 27.
The number 3 becomes the next digit in our result. 
Result so far: 83726.3
Subtracting 363 from 390 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 10:
The number 121 fits into 270 2 times, leaving a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 83726.32
If we take 242 away from 270, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 11:
The number 121 fits into 280 2 times, leaving a remainder of 38.
Write down 2 as next digit of the result. 
Result so far: 83726.322
Subtract 242 from 280 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The final outcome is 83726.322, with a leftover of 0.0038.