91170431 ÷ 493 
We want to figure out the number of times 91170431 can be divided by 493.

Step 1:
When dividing 9 by 493, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 493

Going ahead to step 2:
When dividing 91 by 493, we get 0 with a remainder of 91.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 91, we get 91.
Grab the next digit (1) from the dividend, add it to 91, then carry on: 911 / 493

Advancing to step 3:
493 goes into 911 1 times with a remainder of 418.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 493 from 911 to get 418.
Include the next digit (7) from the dividend after 418, then repeat: 4187 / 493

Moving on to step 4:
493 can be fit into 4187 8 times, resulting in a remainder of 243.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Subtracting 3944 from 4187 leaves us with 243.
Take the next digit (0) from the dividend and append it to 243, then repeat: 2430 / 493

Let's proceed to step 5:
493 can be fit into 2430 4 times, resulting in a remainder of 458.
The next digit of our result is 4. 
Result so far: 184.0
If we subtract 1972 from 2430, we get 458.
Append the next digit (4) from the dividend to 458 and continue with: 4584 / 493

Step 6:
When dividing 4584 by 493, we get 9 with a remainder of 147.
Record the quotient 9 as the next digit in the result. 
Result so far: 1849.0
Deduct 4437 from 4584 and we're left with 147.
Take the next digit (3) from the dividend and append it to 147, then repeat: 1473 / 493

Let's proceed to step 7:
493 goes into 1473 2 times with a remainder of 487.
Put 2 as the next digit of the answer. 
Result so far: 18492.0
The remainder is 487 after subtracting 986 from 1473.
Append the next digit (1) from the dividend to 487 and continue with: 4871 / 493

On to step 8:
The number 493 fits into 4871 9 times, leaving a remainder of 434.
The next digit of our result is 9. 
Result so far: 184929.0
If we subtract 4437 from 4871, we get 434.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4340, and continue the process.

On to step 9:
If we divide 4340 by 493, we get 8 and a remainder of 396.
Use 8 as the next digit of our solution. 
Result so far: 184929.8
Deduct 3944 from 4340 and we're left with 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Step 10:
493 goes into 3960 8 times with a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 184929.88
The remainder is 16 after subtracting 3944 from 3960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 184929.88, with a leftover of 0.016.