We're dividing 408486 by 91 
Let's see how many times 91 fits into 408486.

Let's proceed to step 1:
The number 91 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 91

Moving on to step 2:
91 can be fit into 40 0 times, resulting in a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 40, we get 40.
Fetch the next digit (8) from the dividend, attach it to 40 and continue: 408 / 91

Moving on to step 3:
When dividing 408 by 91, we get 4 with a remainder of 44.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 364 from 408 to get 44.
Include the next digit (4) from the dividend after 44, then repeat: 444 / 91

On to step 4:
444 divided by 91 is 4 with a remainder of 80.
Record the quotient 4 as the next digit in the result. 
Result so far: 44.0
If we subtract 364 from 444, we get 80.
Include the next digit (8) from the dividend after 80, then repeat: 808 / 91

Moving on to step 5:
If we divide 808 by 91, we get 8 and a remainder of 80.
Record the quotient 8 as the next digit in the result. 
Result so far: 448.0
Subtracting 728 from 808 leaves us with 80.
Bring next digit (6) of the dividend behind the 80 and repeat the process: 806 / 91

Step 6:
91 goes into 806 8 times with a remainder of 78.
Use 8 as the next digit of our solution. 
Result so far: 4488.0
Deduct 728 from 806 and we're left with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

On to step 7:
91 goes into 780 8 times with a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 4488.8
The remainder is 52 after subtracting 728 from 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 8:
When dividing 520 by 91, we get 5 with a remainder of 65.
Write down 5 as next digit of the result. 
Result so far: 4488.85
If we subtract 455 from 520, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 9:
91 can be fit into 650 7 times, resulting in a remainder of 13.
The next digit of our result is 7. 
Result so far: 4488.857
The remainder is 13 after subtracting 637 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 10:
The number 91 fits into 130 1 times, leaving a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 4488.8571
Subtract 91 from 130 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 11:
When dividing 390 by 91, we get 4 with a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 4488.85714
Subtract 364 from 390 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 12:
When dividing 260 by 91, we get 2 with a remainder of 78.
Use 2 as the next digit of our solution. 
Result so far: 4488.857142
If we take 182 away from 260, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Advancing to step 13:
780 divided by 91 is 8 with a remainder of 52.
The number 8 becomes the next digit in our result. 
Result so far: 4488.8571428
If we subtract 728 from 780, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 14:
If we divide 520 by 91, we get 5 and a remainder of 65.
The number 5 becomes the next digit in our result. 
Result so far: 4488.85714285
The remainder is 65 after subtracting 455 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

The quotient of the division is 4488.85714285, and the remainder is 6.5e-08.