We're dividing 86250591 by 497 
We want to figure out the number of times 86250591 can be divided by 497.

Advancing to step 1:
8 divided by 497 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 497

Advancing to step 2:
If we divide 86 by 497, we get 0 and a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Grab the next digit (2) from the dividend, add it to 86, then carry on: 862 / 497

Moving on to step 3:
497 goes into 862 1 times with a remainder of 365.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 497 from 862 to get 365.
Bring next digit (5) of the dividend behind the 365 and repeat the process: 3655 / 497

On to step 4:
If we divide 3655 by 497, we get 7 and a remainder of 176.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
If we subtract 3479 from 3655, we get 176.
Take the next digit (0) from the dividend and append it to 176, then repeat: 1760 / 497

On to step 5:
497 can be fit into 1760 3 times, resulting in a remainder of 269.
The next digit of our result is 3. 
Result so far: 173.0
If we subtract 1491 from 1760, we get 269.
Include the next digit (5) from the dividend after 269, then repeat: 2695 / 497

Going ahead to step 6:
If we divide 2695 by 497, we get 5 and a remainder of 210.
Use 5 as the next digit of our solution. 
Result so far: 1735.0
The remainder is 210 after subtracting 2485 from 2695.
Append the next digit (9) from the dividend to 210 and continue with: 2109 / 497

Advancing to step 7:
The number 497 fits into 2109 4 times, leaving a remainder of 121.
Use 4 as the next digit of our solution. 
Result so far: 17354.0
Deduct 1988 from 2109 and we're left with 121.
Bring next digit (1) of the dividend behind the 121 and repeat the process: 1211 / 497

Advancing to step 8:
When dividing 1211 by 497, we get 2 with a remainder of 217.
Use 2 as the next digit of our solution. 
Result so far: 173542.0
If we subtract 994 from 1211, we get 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Advancing to step 9:
If we divide 2170 by 497, we get 4 and a remainder of 182.
Put 4 as the next digit of the answer. 
Result so far: 173542.4
If we subtract 1988 from 2170, we get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Advancing to step 10:
The number 497 fits into 1820 3 times, leaving a remainder of 329.
The next digit of our result is 3. 
Result so far: 173542.43
If we subtract 1491 from 1820, we get 329.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3290, and continue the process.

Step 11:
If we divide 3290 by 497, we get 6 and a remainder of 308.
The number 6 becomes the next digit in our result. 
Result so far: 173542.436
If we take 2982 away from 3290, we end up with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Advancing to step 12:
497 goes into 3080 6 times with a remainder of 98.
The next digit of our result is 6. 
Result so far: 173542.4366
Subtracting 2982 from 3080 leaves us with 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

The final outcome is 173542.4366, with a leftover of 0.00098.