We look at the division of 15000721 by 199 
We want to divide 15000721 by 199.

Moving on to step 1:
If we divide 1 by 199, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 199

On to step 2:
The number 199 fits into 15 0 times, leaving a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Append the next digit (0) from the dividend to 15 and continue with: 150 / 199

Step 3:
199 goes into 150 0 times with a remainder of 150.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 150 to get 150.
Append the next digit (0) from the dividend to 150 and continue with: 1500 / 199

Advancing to step 4:
199 goes into 1500 7 times with a remainder of 107.
The next digit of our result is 7. 
Result so far: 7.0
Subtract 1393 from 1500 to get 107.
Include the next digit (0) from the dividend after 107, then repeat: 1070 / 199

Moving on to step 5:
1070 divided by 199 is 5 with a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 75.0
Subtracting 995 from 1070 leaves us with 75.
Fetch the next digit (7) from the dividend, attach it to 75 and continue: 757 / 199

Step 6:
757 divided by 199 is 3 with a remainder of 160.
The number 3 becomes the next digit in our result. 
Result so far: 753.0
The remainder is 160 after subtracting 597 from 757.
Append the next digit (2) from the dividend to 160 and continue with: 1602 / 199

Step 7:
199 goes into 1602 8 times with a remainder of 10.
Use 8 as the next digit of our solution. 
Result so far: 7538.0
Subtract 1592 from 1602 to get 10.
Fetch the next digit (1) from the dividend, attach it to 10 and continue: 101 / 199

Moving on to step 8:
101 divided by 199 is 0 with a remainder of 101.
Put 0 as the next digit of the answer. 
Result so far: 75380.0
Subtract 0 from 101 to get 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Moving on to step 9:
The number 199 fits into 1010 5 times, leaving a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 75380.5
If we subtract 995 from 1010, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 10:
If we divide 150 by 199, we get 0 and a remainder of 150.
Put 0 as the next digit of the answer. 
Result so far: 75380.5
Subtracting 0 from 150 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Advancing to step 11:
199 goes into 1500 7 times with a remainder of 107.
The next digit of our result is 7. 
Result so far: 75380.507
The remainder is 107 after subtracting 1393 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Advancing to step 12:
If we divide 1070 by 199, we get 5 and a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 75380.5075
If we take 995 away from 1070, 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.

Let's proceed to step 13:
When dividing 750 by 199, we get 3 with a remainder of 153.
Put 3 as the next digit of the answer. 
Result so far: 75380.50753
Subtract 597 from 750 to get 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Advancing to step 14:
When dividing 1530 by 199, we get 7 with a remainder of 137.
Write down 7 as next digit of the result. 
Result so far: 75380.507537
Subtract 1393 from 1530 to get 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

On to step 15:
If we divide 1370 by 199, we get 6 and a remainder of 176.
Put 6 as the next digit of the answer. 
Result so far: 75380.5075376
The remainder is 176 after subtracting 1194 from 1370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Step 16:
1760 divided by 199 is 8 with a remainder of 168.
Put 8 as the next digit of the answer. 
Result so far: 75380.50753768
Subtracting 1592 from 1760 leaves us with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

The final result is 75380.50753768 with a remainder of 1.68e-07.