91666285 ÷ 491 
Let's see how many times 491 fits into 91666285.

Step 1:
When dividing 9 by 491, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 491

On to step 2:
When dividing 91 by 491, we get 0 with a remainder of 91.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 91 to get 91.
Append the next digit (6) from the dividend to 91 and continue with: 916 / 491

Advancing to step 3:
When dividing 916 by 491, we get 1 with a remainder of 425.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 491 from 916 and we're left with 425.
Include the next digit (6) from the dividend after 425, then repeat: 4256 / 491

On to step 4:
The number 491 fits into 4256 8 times, leaving a remainder of 328.
Put 8 as the next digit of the answer. 
Result so far: 18.0
The remainder is 328 after subtracting 3928 from 4256.
Append the next digit (6) from the dividend to 328 and continue with: 3286 / 491

Going ahead to step 5:
491 can be fit into 3286 6 times, resulting in a remainder of 340.
Put 6 as the next digit of the answer. 
Result so far: 186.0
If we take 2946 away from 3286, we end up with 340.
Take the next digit (2) from the dividend and append it to 340, then repeat: 3402 / 491

Moving on to step 6:
3402 divided by 491 is 6 with a remainder of 456.
The number 6 becomes the next digit in our result. 
Result so far: 1866.0
Subtract 2946 from 3402 to get 456.
Take the next digit (8) from the dividend and append it to 456, then repeat: 4568 / 491

Advancing to step 7:
491 goes into 4568 9 times with a remainder of 149.
Put 9 as the next digit of the answer. 
Result so far: 18669.0
If we subtract 4419 from 4568, we get 149.
Fetch the next digit (5) from the dividend, attach it to 149 and continue: 1495 / 491

Moving on to step 8:
491 can be fit into 1495 3 times, resulting in a remainder of 22.
Put 3 as the next digit of the answer. 
Result so far: 186693.0
If we subtract 1473 from 1495, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 9:
When dividing 220 by 491, we get 0 with a remainder of 220.
The number 0 becomes the next digit in our result. 
Result so far: 186693.0
The remainder is 220 after subtracting 0 from 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 10:
491 goes into 2200 4 times with a remainder of 236.
Use 4 as the next digit of our solution. 
Result so far: 186693.04
Deduct 1964 from 2200 and we're left with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Advancing to step 11:
491 can be fit into 2360 4 times, resulting in a remainder of 396.
Record the quotient 4 as the next digit in the result. 
Result so far: 186693.044
If we subtract 1964 from 2360, we get 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

The final result is 186693.044 with a remainder of 0.0396.