86191254 ÷ 488 
Our goal is to divide 86191254 by 488.

Step 1:
If we divide 8 by 488, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 488

Going ahead to step 2:
488 goes into 86 0 times with a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Append the next digit (1) from the dividend to 86 and continue with: 861 / 488

Moving on to step 3:
861 divided by 488 is 1 with a remainder of 373.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 373 after subtracting 488 from 861.
Bring next digit (9) of the dividend behind the 373 and repeat the process: 3739 / 488

Step 4:
When dividing 3739 by 488, we get 7 with a remainder of 323.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
The remainder is 323 after subtracting 3416 from 3739.
Grab the next digit (1) from the dividend, add it to 323, then carry on: 3231 / 488

Advancing to step 5:
The number 488 fits into 3231 6 times, leaving a remainder of 303.
Write down 6 as next digit of the result. 
Result so far: 176.0
Subtracting 2928 from 3231 leaves us with 303.
Fetch the next digit (2) from the dividend, attach it to 303 and continue: 3032 / 488

Step 6:
When dividing 3032 by 488, we get 6 with a remainder of 104.
Put 6 as the next digit of the answer. 
Result so far: 1766.0
Subtracting 2928 from 3032 leaves us with 104.
Bring next digit (5) of the dividend behind the 104 and repeat the process: 1045 / 488

On to step 7:
The number 488 fits into 1045 2 times, leaving a remainder of 69.
Record the quotient 2 as the next digit in the result. 
Result so far: 17662.0
If we take 976 away from 1045, we end up with 69.
Fetch the next digit (4) from the dividend, attach it to 69 and continue: 694 / 488

On to step 8:
488 can be fit into 694 1 times, resulting in a remainder of 206.
Record the quotient 1 as the next digit in the result. 
Result so far: 176621.0
Subtracting 488 from 694 leaves us with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Advancing to step 9:
When dividing 2060 by 488, we get 4 with a remainder of 108.
The number 4 becomes the next digit in our result. 
Result so far: 176621.4
If we take 1952 away from 2060, we end up with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Going ahead to step 10:
If we divide 1080 by 488, we get 2 and a remainder of 104.
Use 2 as the next digit of our solution. 
Result so far: 176621.42
If we subtract 976 from 1080, we get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Moving on to step 11:
If we divide 1040 by 488, we get 2 and a remainder of 64.
Write down 2 as next digit of the result. 
Result so far: 176621.422
If we subtract 976 from 1040, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The quotient of the division is 176621.422, and the remainder is 0.0064.