We're dividing 5991891 by 809 
Our goal is to divide 5991891 by 809.

Advancing to step 1:
809 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 809

Going ahead to step 2:
809 can be fit into 59 0 times, resulting in a remainder of 59.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 59, we end up with 59.
Append the next digit (9) from the dividend to 59 and continue with: 599 / 809

Advancing to step 3:
809 can be fit into 599 0 times, resulting in a remainder of 599.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 599 leaves us with 599.
Include the next digit (1) from the dividend after 599, then repeat: 5991 / 809

Advancing to step 4:
When dividing 5991 by 809, we get 7 with a remainder of 328.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtract 5663 from 5991 to get 328.
Fetch the next digit (8) from the dividend, attach it to 328 and continue: 3288 / 809

On to step 5:
3288 divided by 809 is 4 with a remainder of 52.
The next digit of our result is 4. 
Result so far: 74.0
If we take 3236 away from 3288, we end up with 52.
Fetch the next digit (9) from the dividend, attach it to 52 and continue: 529 / 809

On to step 6:
809 goes into 529 0 times with a remainder of 529.
The next digit of our result is 0. 
Result so far: 740.0
If we subtract 0 from 529, we get 529.
Append the next digit (1) from the dividend to 529 and continue with: 5291 / 809

Step 7:
If we divide 5291 by 809, we get 6 and a remainder of 437.
Put 6 as the next digit of the answer. 
Result so far: 7406.0
Deduct 4854 from 5291 and we're left with 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

Let's proceed to step 8:
The number 809 fits into 4370 5 times, leaving a remainder of 325.
Write down 5 as next digit of the result. 
Result so far: 7406.5
Subtract 4045 from 4370 to get 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Let's proceed to step 9:
When dividing 3250 by 809, we get 4 with a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 7406.54
If we take 3236 away from 3250, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 10:
809 goes into 140 0 times with a remainder of 140.
The number 0 becomes the next digit in our result. 
Result so far: 7406.54
If we take 0 away from 140, we end up with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 11:
The number 809 fits into 1400 1 times, leaving a remainder of 591.
The next digit of our result is 1. 
Result so far: 7406.5401
If we take 809 away from 1400, we end up with 591.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5910, and continue the process.

Let's proceed to step 12:
If we divide 5910 by 809, we get 7 and a remainder of 247.
Write down 7 as next digit of the result. 
Result so far: 7406.54017
The remainder is 247 after subtracting 5663 from 5910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

Advancing to step 13:
If we divide 2470 by 809, we get 3 and a remainder of 43.
The next digit of our result is 3. 
Result so far: 7406.540173
If we subtract 2427 from 2470, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

On to step 14:
The number 809 fits into 430 0 times, leaving a remainder of 430.
The next digit of our result is 0. 
Result so far: 7406.540173
The remainder is 430 after subtracting 0 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Going ahead to step 15:
The number 809 fits into 4300 5 times, leaving a remainder of 255.
Put 5 as the next digit of the answer. 
Result so far: 7406.54017305
Deduct 4045 from 4300 and we're left with 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

The final outcome is 7406.54017305, with a leftover of 2.55e-07.