We look at the division of 16578549 by 865 
We want to divide 16578549 by 865.

Step 1:
865 can be fit into 1 0 times, resulting in 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.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 865

On to step 2:
865 goes into 16 0 times with a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 16, we end up with 16.
Include the next digit (5) from the dividend after 16, then repeat: 165 / 865

Moving on to step 3:
The number 865 fits into 165 0 times, leaving a remainder of 165.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 165 and we're left with 165.
Fetch the next digit (7) from the dividend, attach it to 165 and continue: 1657 / 865

Going ahead to step 4:
If we divide 1657 by 865, we get 1 and a remainder of 792.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 865 from 1657 and we're left with 792.
Fetch the next digit (8) from the dividend, attach it to 792 and continue: 7928 / 865

Let's proceed to step 5:
The number 865 fits into 7928 9 times, leaving a remainder of 143.
The next digit of our result is 9. 
Result so far: 19.0
If we subtract 7785 from 7928, we get 143.
Grab the next digit (5) from the dividend, add it to 143, then carry on: 1435 / 865

On to step 6:
If we divide 1435 by 865, we get 1 and a remainder of 570.
Put 1 as the next digit of the answer. 
Result so far: 191.0
Deduct 865 from 1435 and we're left with 570.
Grab the next digit (4) from the dividend, add it to 570, then carry on: 5704 / 865

Step 7:
5704 divided by 865 is 6 with a remainder of 514.
The next digit of our result is 6. 
Result so far: 1916.0
The remainder is 514 after subtracting 5190 from 5704.
Include the next digit (9) from the dividend after 514, then repeat: 5149 / 865

Advancing to step 8:
865 can be fit into 5149 5 times, resulting in a remainder of 824.
The next digit of our result is 5. 
Result so far: 19165.0
The remainder is 824 after subtracting 4325 from 5149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8240, and continue the process.

Let's proceed to step 9:
8240 divided by 865 is 9 with a remainder of 455.
The number 9 becomes the next digit in our result. 
Result so far: 19165.9
Subtracting 7785 from 8240 leaves us with 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Step 10:
The number 865 fits into 4550 5 times, leaving a remainder of 225.
Put 5 as the next digit of the answer. 
Result so far: 19165.95
Deduct 4325 from 4550 and we're left with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Going ahead to step 11:
If we divide 2250 by 865, we get 2 and a remainder of 520.
The number 2 becomes the next digit in our result. 
Result so far: 19165.952
Deduct 1730 from 2250 and we're left with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Advancing to step 12:
The number 865 fits into 5200 6 times, leaving a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 19165.9526
Deduct 5190 from 5200 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 13:
If we divide 100 by 865, we get 0 and a remainder of 100.
Put 0 as the next digit of the answer. 
Result so far: 19165.9526
If we subtract 0 from 100, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 14:
If we divide 1000 by 865, we get 1 and a remainder of 135.
Write down 1 as next digit of the result. 
Result so far: 19165.952601
If we take 865 away from 1000, we end up with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Advancing to step 15:
If we divide 1350 by 865, we get 1 and a remainder of 485.
Use 1 as the next digit of our solution. 
Result so far: 19165.9526011
The remainder is 485 after subtracting 865 from 1350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

The final result is 19165.9526011 with a remainder of 4.85e-06.