We're dividing 353448 by 29 
The aim is to understand the frequency of 29 in 353448.

On to step 1:
The number 29 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 29

Let's proceed to step 2:
When dividing 35 by 29, we get 1 with a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 29 away from 35, we end up with 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 29

Let's proceed to step 3:
29 goes into 63 2 times with a remainder of 5.
The next digit of our result is 2. 
Result so far: 12.0
Subtract 58 from 63 to get 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 29

Let's proceed to step 4:
When dividing 54 by 29, we get 1 with a remainder of 25.
Write down 1 as next digit of the result. 
Result so far: 121.0
Deduct 29 from 54 and we're left with 25.
Append the next digit (4) from the dividend to 25 and continue with: 254 / 29

Going ahead to step 5:
When dividing 254 by 29, we get 8 with a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 1218.0
Deduct 232 from 254 and we're left with 22.
Bring next digit (8) of the dividend behind the 22 and repeat the process: 228 / 29

Let's proceed to step 6:
29 can be fit into 228 7 times, resulting in a remainder of 25.
Put 7 as the next digit of the answer. 
Result so far: 12187.0
Subtracting 203 from 228 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 7:
The number 29 fits into 250 8 times, leaving a remainder of 18.
Record the quotient 8 as the next digit in the result. 
Result so far: 12187.8
Subtracting 232 from 250 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 8:
The number 29 fits into 180 6 times, leaving a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 12187.86
Subtract 174 from 180 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 9:
The number 29 fits into 60 2 times, leaving a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 12187.862
Subtracting 58 from 60 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 10:
The number 29 fits into 20 0 times, leaving a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 12187.862
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 11:
29 can be fit into 200 6 times, resulting in a remainder of 26.
The number 6 becomes the next digit in our result. 
Result so far: 12187.86206
If we subtract 174 from 200, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 12:
260 divided by 29 is 8 with a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 12187.862068
If we take 232 away from 260, 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.

Advancing to step 13:
280 divided by 29 is 9 with a remainder of 19.
Record the quotient 9 as the next digit in the result. 
Result so far: 12187.8620689
Subtracting 261 from 280 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 14:
190 divided by 29 is 6 with a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 12187.86206896
Deduct 174 from 190 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 12187.86206896 with a remaining 1.6e-08.