401966 ÷ 29 
The aim is to understand the frequency of 29 in 401966.

On to step 1:
The number 29 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 29

On to step 2:
When dividing 40 by 29, we get 1 with a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 29 from 40 to get 11.
Fetch the next digit (1) from the dividend, attach it to 11 and continue: 111 / 29

Advancing to step 3:
If we divide 111 by 29, we get 3 and a remainder of 24.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Deduct 87 from 111 and we're left with 24.
Fetch the next digit (9) from the dividend, attach it to 24 and continue: 249 / 29

On to step 4:
The number 29 fits into 249 8 times, leaving a remainder of 17.
Record the quotient 8 as the next digit in the result. 
Result so far: 138.0
Deduct 232 from 249 and we're left with 17.
Bring next digit (6) of the dividend behind the 17 and repeat the process: 176 / 29

Going ahead to step 5:
When dividing 176 by 29, we get 6 with a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 1386.0
Deduct 174 from 176 and we're left with 2.
Bring next digit (6) of the dividend behind the 2 and repeat the process: 26 / 29

Moving on to step 6:
If we divide 26 by 29, we get 0 and a remainder of 26.
Record the quotient 0 as the next digit in the result. 
Result so far: 13860.0
Subtracting 0 from 26 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 7:
When dividing 260 by 29, we get 8 with a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 13860.8
The remainder is 28 after subtracting 232 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 8:
If we divide 280 by 29, we get 9 and a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 13860.89
The remainder is 19 after subtracting 261 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 9:
29 can be fit into 190 6 times, resulting in a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 13860.896
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.

Step 10:
If we divide 160 by 29, we get 5 and a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 13860.8965
The remainder is 15 after subtracting 145 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 11:
The number 29 fits into 150 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 13860.89655
If we take 145 away from 150, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 13860.89655, with a leftover of 5e-06.