We divide 13246587 by 121
The aim is to understand the frequency of 121 in 13246587.

On to step 1:
The number 121 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 121

Moving on to step 2:
121 can be fit into 13 0 times, resulting in a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Fetch the next digit (2) from the dividend, attach it to 13 and continue: 132 / 121

Advancing to step 3:
When dividing 132 by 121, we get 1 with a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 11 after subtracting 121 from 132.
Append the next digit (4) from the dividend to 11 and continue with: 114 / 121

Let's proceed to step 4:
121 goes into 114 0 times with a remainder of 114.
The next digit of our result is 0. 
Result so far: 10.0
If we take 0 away from 114, we end up with 114.
Bring next digit (6) of the dividend behind the 114 and repeat the process: 1146 / 121

Going ahead to step 5:
The number 121 fits into 1146 9 times, leaving a remainder of 57.
Record the quotient 9 as the next digit in the result. 
Result so far: 109.0
The remainder is 57 after subtracting 1089 from 1146.
Take the next digit (5) from the dividend and append it to 57, then repeat: 575 / 121

Moving on to step 6:
When dividing 575 by 121, we get 4 with a remainder of 91.
Record the quotient 4 as the next digit in the result. 
Result so far: 1094.0
If we subtract 484 from 575, we get 91.
Take the next digit (8) from the dividend and append it to 91, then repeat: 918 / 121

Moving on to step 7:
If we divide 918 by 121, we get 7 and a remainder of 71.
Put 7 as the next digit of the answer. 
Result so far: 10947.0
If we subtract 847 from 918, we get 71.
Append the next digit (7) from the dividend to 71 and continue with: 717 / 121

Let's proceed to step 8:
121 goes into 717 5 times with a remainder of 112.
Put 5 as the next digit of the answer. 
Result so far: 109475.0
If we take 605 away from 717, 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.

Moving on to step 9:
When dividing 1120 by 121, we get 9 with a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 109475.9
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.

Moving on to step 10:
121 goes into 310 2 times with a remainder of 68.
Use 2 as the next digit of our solution. 
Result so far: 109475.92
If we subtract 242 from 310, we 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.

Going ahead to step 11:
121 goes into 680 5 times with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 109475.925
Deduct 605 from 680 and we're left 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.

Let's proceed to step 12:
If we divide 750 by 121, we get 6 and a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 109475.9256
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.

Moving on to step 13:
240 divided by 121 is 1 with a remainder of 119.
Write down 1 as next digit of the result. 
Result so far: 109475.92561
If we subtract 121 from 240, we get 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:
1190 divided by 121 is 9 with a remainder of 101.
Write down 9 as next digit of the result. 
Result so far: 109475.925619
The remainder is 101 after subtracting 1089 from 1190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Moving on to step 15:
When dividing 1010 by 121, we get 8 with a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 109475.9256198
If we subtract 968 from 1010, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 16:
If we divide 420 by 121, we get 3 and a remainder of 57.
The number 3 becomes the next digit in our result. 
Result so far: 109475.92561983
The remainder is 57 after subtracting 363 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

After the division, we end up with 109475.92561983 and a remainder of 5.7e-08.