Let's divide 91000886 by 457
We're looking to find how many times 457 goes into 91000886.

Advancing to step 1:
457 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 457

Step 2:
If we divide 91 by 457, we get 0 and a remainder of 91.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 91, we end up with 91.
Bring next digit (0) of the dividend behind the 91 and repeat the process: 910 / 457

Let's proceed to step 3:
If we divide 910 by 457, we get 1 and a remainder of 453.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 457 from 910, we get 453.
Grab the next digit (0) from the dividend, add it to 453, then carry on: 4530 / 457

Advancing to step 4:
4530 divided by 457 is 9 with a remainder of 417.
The next digit of our result is 9. 
Result so far: 19.0
The remainder is 417 after subtracting 4113 from 4530.
Include the next digit (0) from the dividend after 417, then repeat: 4170 / 457

On to step 5:
The number 457 fits into 4170 9 times, leaving a remainder of 57.
The next digit of our result is 9. 
Result so far: 199.0
Deduct 4113 from 4170 and we're left with 57.
Fetch the next digit (8) from the dividend, attach it to 57 and continue: 578 / 457

Going ahead to step 6:
578 divided by 457 is 1 with a remainder of 121.
Use 1 as the next digit of our solution. 
Result so far: 1991.0
Deduct 457 from 578 and we're left with 121.
Bring next digit (8) of the dividend behind the 121 and repeat the process: 1218 / 457

Let's proceed to step 7:
The number 457 fits into 1218 2 times, leaving a remainder of 304.
The next digit of our result is 2. 
Result so far: 19912.0
Deduct 914 from 1218 and we're left with 304.
Grab the next digit (6) from the dividend, add it to 304, then carry on: 3046 / 457

Step 8:
457 can be fit into 3046 6 times, resulting in a remainder of 304.
Put 6 as the next digit of the answer. 
Result so far: 199126.0
Subtracting 2742 from 3046 leaves us with 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Step 9:
If we divide 3040 by 457, we get 6 and a remainder of 298.
Write down 6 as next digit of the result. 
Result so far: 199126.6
If we subtract 2742 from 3040, we get 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Step 10:
When dividing 2980 by 457, we get 6 with a remainder of 238.
Record the quotient 6 as the next digit in the result. 
Result so far: 199126.66
Subtracting 2742 from 2980 leaves us with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

The final result is 199126.66 with a remainder of 0.238.