We look at the division of 338391 by 29 
The aim is to understand the frequency of 29 in 338391.

Step 1:
When dividing 3 by 29, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 29

Let's proceed to step 2:
33 divided by 29 is 1 with a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 4 after subtracting 29 from 33.
Take the next digit (8) from the dividend and append it to 4, then repeat: 48 / 29

Advancing to step 3:
If we divide 48 by 29, we get 1 and a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtract 29 from 48 to get 19.
Grab the next digit (3) from the dividend, add it to 19, then carry on: 193 / 29

Going ahead to step 4:
29 can be fit into 193 6 times, resulting in a remainder of 19.
Use 6 as the next digit of our solution. 
Result so far: 116.0
The remainder is 19 after subtracting 174 from 193.
Include the next digit (9) from the dividend after 19, then repeat: 199 / 29

Moving on to step 5:
When dividing 199 by 29, we get 6 with a remainder of 25.
Record the quotient 6 as the next digit in the result. 
Result so far: 1166.0
If we take 174 away from 199, we end up with 25.
Grab the next digit (1) from the dividend, add it to 25, then carry on: 251 / 29

Step 6:
29 goes into 251 8 times with a remainder of 19.
Record the quotient 8 as the next digit in the result. 
Result so far: 11668.0
If we subtract 232 from 251, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 7:
When dividing 190 by 29, we get 6 with a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 11668.6
If we subtract 174 from 190, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 8:
29 can be fit into 160 5 times, resulting in a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 11668.65
If we take 145 away from 160, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 9:
150 divided by 29 is 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 11668.655
The remainder is 5 after subtracting 145 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The quotient of the division is 11668.655, and the remainder is 0.0005.