We look at the division of 29305225 by 399 
We're looking to find how many times 399 goes into 29305225.

Going ahead to step 1:
The number 399 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 399

Step 2:
399 goes into 29 0 times with a remainder of 29.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 29 leaves us with 29.
Take the next digit (3) from the dividend and append it to 29, then repeat: 293 / 399

Advancing to step 3:
When dividing 293 by 399, we get 0 with a remainder of 293.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 293 to get 293.
Append the next digit (0) from the dividend to 293 and continue with: 2930 / 399

Moving on to step 4:
The number 399 fits into 2930 7 times, leaving a remainder of 137.
The next digit of our result is 7. 
Result so far: 7.0
Subtract 2793 from 2930 to get 137.
Include the next digit (5) from the dividend after 137, then repeat: 1375 / 399

Let's proceed to step 5:
If we divide 1375 by 399, we get 3 and a remainder of 178.
Write down 3 as next digit of the result. 
Result so far: 73.0
Deduct 1197 from 1375 and we're left with 178.
Grab the next digit (2) from the dividend, add it to 178, then carry on: 1782 / 399

Moving on to step 6:
When dividing 1782 by 399, we get 4 with a remainder of 186.
Write down 4 as next digit of the result. 
Result so far: 734.0
If we subtract 1596 from 1782, we get 186.
Include the next digit (2) from the dividend after 186, then repeat: 1862 / 399

Advancing to step 7:
If we divide 1862 by 399, we get 4 and a remainder of 266.
The number 4 becomes the next digit in our result. 
Result so far: 7344.0
If we take 1596 away from 1862, we end up with 266.
Fetch the next digit (5) from the dividend, attach it to 266 and continue: 2665 / 399

Advancing to step 8:
2665 divided by 399 is 6 with a remainder of 271.
Use 6 as the next digit of our solution. 
Result so far: 73446.0
Deduct 2394 from 2665 and we're left with 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Let's proceed to step 9:
2710 divided by 399 is 6 with a remainder of 316.
Write down 6 as next digit of the result. 
Result so far: 73446.6
If we subtract 2394 from 2710, we get 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

On to step 10:
399 goes into 3160 7 times with a remainder of 367.
The number 7 becomes the next digit in our result. 
Result so far: 73446.67
Subtract 2793 from 3160 to get 367.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

Moving on to step 11:
3670 divided by 399 is 9 with a remainder of 79.
Write down 9 as next digit of the result. 
Result so far: 73446.679
Subtracting 3591 from 3670 leaves us with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Going ahead to step 12:
If we divide 790 by 399, we get 1 and a remainder of 391.
The number 1 becomes the next digit in our result. 
Result so far: 73446.6791
The remainder is 391 after subtracting 399 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3910, and continue the process.

Let's proceed to step 13:
If we divide 3910 by 399, we get 9 and a remainder of 319.
The next digit of our result is 9. 
Result so far: 73446.67919
The remainder is 319 after subtracting 3591 from 3910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

Step 14:
399 goes into 3190 7 times with a remainder of 397.
The number 7 becomes the next digit in our result. 
Result so far: 73446.679197
The remainder is 397 after subtracting 2793 from 3190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3970, and continue the process.

On to step 15:
If we divide 3970 by 399, we get 9 and a remainder of 379.
Record the quotient 9 as the next digit in the result. 
Result so far: 73446.6791979
Subtract 3591 from 3970 to get 379.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3790, and continue the process.

On to step 16:
3790 divided by 399 is 9 with a remainder of 199.
Write down 9 as next digit of the result. 
Result so far: 73446.67919799
Subtracting 3591 from 3790 leaves us with 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

The final outcome is 73446.67919799, with a leftover of 1.99e-07.