39899129 divided by 725 
We want to figure out the number of times 39899129 can be divided by 725.

Advancing to step 1:
725 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 725

Let's proceed to step 2:
725 goes into 39 0 times with a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Append the next digit (8) from the dividend to 39 and continue with: 398 / 725

Step 3:
398 divided by 725 is 0 with a remainder of 398.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 398 after subtracting 0 from 398.
Take the next digit (9) from the dividend and append it to 398, then repeat: 3989 / 725

On to step 4:
When dividing 3989 by 725, we get 5 with a remainder of 364.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we subtract 3625 from 3989, we get 364.
Bring next digit (9) of the dividend behind the 364 and repeat the process: 3649 / 725

On to step 5:
3649 divided by 725 is 5 with a remainder of 24.
Record the quotient 5 as the next digit in the result. 
Result so far: 55.0
Subtract 3625 from 3649 to get 24.
Include the next digit (1) from the dividend after 24, then repeat: 241 / 725

Step 6:
241 divided by 725 is 0 with a remainder of 241.
Use 0 as the next digit of our solution. 
Result so far: 550.0
If we take 0 away from 241, we end up with 241.
Fetch the next digit (2) from the dividend, attach it to 241 and continue: 2412 / 725

Let's proceed to step 7:
When dividing 2412 by 725, we get 3 with a remainder of 237.
The number 3 becomes the next digit in our result. 
Result so far: 5503.0
Deduct 2175 from 2412 and we're left with 237.
Grab the next digit (9) from the dividend, add it to 237, then carry on: 2379 / 725

Going ahead to step 8:
2379 divided by 725 is 3 with a remainder of 204.
Put 3 as the next digit of the answer. 
Result so far: 55033.0
Subtracting 2175 from 2379 leaves us with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Step 9:
725 can be fit into 2040 2 times, resulting in a remainder of 590.
Record the quotient 2 as the next digit in the result. 
Result so far: 55033.2
Deduct 1450 from 2040 and we're left with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Moving on to step 10:
5900 divided by 725 is 8 with a remainder of 100.
Write down 8 as next digit of the result. 
Result so far: 55033.28
If we take 5800 away from 5900, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 11:
When dividing 1000 by 725, we get 1 with a remainder of 275.
Record the quotient 1 as the next digit in the result. 
Result so far: 55033.281
Deduct 725 from 1000 and we're left with 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Let's proceed to step 12:
If we divide 2750 by 725, we get 3 and a remainder of 575.
Put 3 as the next digit of the answer. 
Result so far: 55033.2813
The remainder is 575 after subtracting 2175 from 2750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

Let's proceed to step 13:
725 can be fit into 5750 7 times, resulting in a remainder of 675.
Use 7 as the next digit of our solution. 
Result so far: 55033.28137
If we subtract 5075 from 5750, we get 675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

Advancing to step 14:
When dividing 6750 by 725, we get 9 with a remainder of 225.
The number 9 becomes the next digit in our result. 
Result so far: 55033.281379
The remainder is 225 after subtracting 6525 from 6750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Step 15:
2250 divided by 725 is 3 with a remainder of 75.
Use 3 as the next digit of our solution. 
Result so far: 55033.2813793
If we take 2175 away from 2250, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 16:
If we divide 750 by 725, we get 1 and a remainder of 25.
Record the quotient 1 as the next digit in the result. 
Result so far: 55033.28137931
Deduct 725 from 750 and we're left 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.

The final outcome is 55033.28137931, with a leftover of 2.5e-08.