29251898 divided by 13 
The aim is to understand the frequency of 13 in 29251898.

On to step 1:
When dividing 2 by 13, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 13

Let's proceed to step 2:
If we divide 29 by 13, we get 2 and a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 26 from 29 and we're left with 3.
Bring next digit (2) of the dividend behind the 3 and repeat the process: 32 / 13

Step 3:
32 divided by 13 is 2 with a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
Subtracting 26 from 32 leaves us with 6.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 13

Advancing to step 4:
The number 13 fits into 65 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 225.0
If we take 65 away from 65, we end up with 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 13

Moving on to step 5:
1 divided by 13 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 2250.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 13

Going ahead to step 6:
18 divided by 13 is 1 with a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 22501.0
The remainder is 5 after subtracting 13 from 18.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 13

Moving on to step 7:
13 can be fit into 59 4 times, resulting in a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 225014.0
Deduct 52 from 59 and we're left with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 13

Going ahead to step 8:
78 divided by 13 is 6 with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 2250146.0
If we take 78 away from 78, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
The number 13 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 2250146.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
0 divided by 13 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 2250146.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 2250146.0 with a remaining 0.0.