We divide 15399659 by 830
We want to figure out the number of times 15399659 can be divided by 830.

Going ahead to step 1:
The number 830 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 830

Going ahead to step 2:
When dividing 15 by 830, we get 0 with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Take the next digit (3) from the dividend and append it to 15, then repeat: 153 / 830

On to step 3:
The number 830 fits into 153 0 times, leaving a remainder of 153.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 153 leaves us with 153.
Include the next digit (9) from the dividend after 153, then repeat: 1539 / 830

Step 4:
830 can be fit into 1539 1 times, resulting in a remainder of 709.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 830 from 1539, we get 709.
Take the next digit (9) from the dividend and append it to 709, then repeat: 7099 / 830

On to step 5:
830 can be fit into 7099 8 times, resulting in a remainder of 459.
Write down 8 as next digit of the result. 
Result so far: 18.0
If we subtract 6640 from 7099, we get 459.
Take the next digit (6) from the dividend and append it to 459, then repeat: 4596 / 830

Step 6:
830 can be fit into 4596 5 times, resulting in a remainder of 446.
Record the quotient 5 as the next digit in the result. 
Result so far: 185.0
Subtracting 4150 from 4596 leaves us with 446.
Grab the next digit (5) from the dividend, add it to 446, then carry on: 4465 / 830

Step 7:
If we divide 4465 by 830, we get 5 and a remainder of 315.
The number 5 becomes the next digit in our result. 
Result so far: 1855.0
If we subtract 4150 from 4465, we get 315.
Grab the next digit (9) from the dividend, add it to 315, then carry on: 3159 / 830

Going ahead to step 8:
830 can be fit into 3159 3 times, resulting in a remainder of 669.
Put 3 as the next digit of the answer. 
Result so far: 18553.0
The remainder is 669 after subtracting 2490 from 3159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6690, and continue the process.

Moving on to step 9:
830 can be fit into 6690 8 times, resulting in a remainder of 50.
Use 8 as the next digit of our solution. 
Result so far: 18553.8
If we take 6640 away from 6690, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 10:
When dividing 500 by 830, we get 0 with a remainder of 500.
Write down 0 as next digit of the result. 
Result so far: 18553.8
If we take 0 away from 500, we end up with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Let's proceed to step 11:
The number 830 fits into 5000 6 times, leaving a remainder of 20.
The next digit of our result is 6. 
Result so far: 18553.806
If we take 4980 away from 5000, we end up with 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 12:
The number 830 fits into 200 0 times, leaving a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 18553.806
Deduct 0 from 200 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 13:
830 goes into 2000 2 times with a remainder of 340.
Use 2 as the next digit of our solution. 
Result so far: 18553.80602
The remainder is 340 after subtracting 1660 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Let's proceed to step 14:
The number 830 fits into 3400 4 times, leaving a remainder of 80.
Record the quotient 4 as the next digit in the result. 
Result so far: 18553.806024
If we take 3320 away from 3400, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 15:
When dividing 800 by 830, we get 0 with a remainder of 800.
Record the quotient 0 as the next digit in the result. 
Result so far: 18553.806024
The remainder is 800 after subtracting 0 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

Moving on to step 16:
The number 830 fits into 8000 9 times, leaving a remainder of 530.
Write down 9 as next digit of the result. 
Result so far: 18553.80602409
Subtracting 7470 from 8000 leaves us with 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

The final result is 18553.80602409 with a remainder of 5.3e-07.