We're dividing 16399059 by 860 
Our goal is to divide 16399059 by 860.

Going ahead to step 1:
When dividing 1 by 860, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 860

Let's proceed to step 2:
The number 860 fits into 16 0 times, leaving a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 16, we end up with 16.
Append the next digit (3) from the dividend to 16 and continue with: 163 / 860

Moving on to step 3:
When dividing 163 by 860, we get 0 with a remainder of 163.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 163, we end up with 163.
Append the next digit (9) from the dividend to 163 and continue with: 1639 / 860

Moving on to step 4:
If we divide 1639 by 860, we get 1 and a remainder of 779.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 860 away from 1639, we end up with 779.
Fetch the next digit (9) from the dividend, attach it to 779 and continue: 7799 / 860

Let's proceed to step 5:
860 goes into 7799 9 times with a remainder of 59.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
Deduct 7740 from 7799 and we're left with 59.
Grab the next digit (0) from the dividend, add it to 59, then carry on: 590 / 860

On to step 6:
If we divide 590 by 860, we get 0 and a remainder of 590.
Put 0 as the next digit of the answer. 
Result so far: 190.0
Subtracting 0 from 590 leaves us with 590.
Grab the next digit (5) from the dividend, add it to 590, then carry on: 5905 / 860

Moving on to step 7:
The number 860 fits into 5905 6 times, leaving a remainder of 745.
The next digit of our result is 6. 
Result so far: 1906.0
Deduct 5160 from 5905 and we're left with 745.
Include the next digit (9) from the dividend after 745, then repeat: 7459 / 860

Let's proceed to step 8:
If we divide 7459 by 860, we get 8 and a remainder of 579.
The next digit of our result is 8. 
Result so far: 19068.0
If we take 6880 away from 7459, we end up with 579.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5790, and continue the process.

On to step 9:
The number 860 fits into 5790 6 times, leaving a remainder of 630.
The number 6 becomes the next digit in our result. 
Result so far: 19068.6
Deduct 5160 from 5790 and we're left with 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

Moving on to step 10:
When dividing 6300 by 860, we get 7 with a remainder of 280.
The number 7 becomes the next digit in our result. 
Result so far: 19068.67
Subtracting 6020 from 6300 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Going ahead to step 11:
The number 860 fits into 2800 3 times, leaving a remainder of 220.
Put 3 as the next digit of the answer. 
Result so far: 19068.673
Subtracting 2580 from 2800 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Moving on to step 12:
If we divide 2200 by 860, we get 2 and a remainder of 480.
The next digit of our result is 2. 
Result so far: 19068.6732
Subtracting 1720 from 2200 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 13:
When dividing 4800 by 860, we get 5 with a remainder of 500.
Record the quotient 5 as the next digit in the result. 
Result so far: 19068.67325
Subtract 4300 from 4800 to get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Step 14:
860 can be fit into 5000 5 times, resulting in a remainder of 700.
Use 5 as the next digit of our solution. 
Result so far: 19068.673255
Subtract 4300 from 5000 to get 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

In conclusion, the division gives 19068.673255 with a balance of 7e-05.