We look at the division of 345191 by 29 
The aim is to understand the frequency of 29 in 345191.

On to step 1:
If we divide 3 by 29, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 29

Step 2:
34 divided by 29 is 1 with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 29 from 34 and we're left with 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 29

Let's proceed to step 3:
When dividing 55 by 29, we get 1 with a remainder of 26.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtract 29 from 55 to get 26.
Include the next digit (1) from the dividend after 26, then repeat: 261 / 29

Moving on to step 4:
If we divide 261 by 29, we get 9 and a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 119.0
The remainder is 0 after subtracting 261 from 261.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 29

Let's proceed to step 5:
If we divide 9 by 29, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 1190.0
Subtract 0 from 9 to get 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 29

On to step 6:
The number 29 fits into 91 3 times, leaving a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 11903.0
If we take 87 away from 91, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 7:
The number 29 fits into 40 1 times, leaving a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 11903.1
Subtract 29 from 40 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 8:
110 divided by 29 is 3 with a remainder of 23.
Write down 3 as next digit of the result. 
Result so far: 11903.13
If we take 87 away from 110, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 9:
If we divide 230 by 29, we get 7 and a remainder of 27.
Write down 7 as next digit of the result. 
Result so far: 11903.137
The remainder is 27 after subtracting 203 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 10:
29 goes into 270 9 times with a remainder of 9.
The number 9 becomes the next digit in our result. 
Result so far: 11903.1379
If we take 261 away from 270, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 11:
The number 29 fits into 90 3 times, leaving a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 11903.13793
The remainder is 3 after subtracting 87 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 12:
The number 29 fits into 30 1 times, leaving a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 11903.137931
Deduct 29 from 30 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 13:
29 can be fit into 10 0 times, resulting in a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 11903.137931
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 14:
29 goes into 100 3 times with a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 11903.13793103
Subtract 87 from 100 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The final result is 11903.13793103 with a remainder of 1.3e-08.