We're dividing 86193253 by 857 
Let's see how many times 857 fits into 86193253.

On to step 1:
If we divide 8 by 857, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 857

Going ahead to step 2:
857 goes into 86 0 times with a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Fetch the next digit (1) from the dividend, attach it to 86 and continue: 861 / 857

Going ahead to step 3:
857 goes into 861 1 times with a remainder of 4.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 857 from 861, we get 4.
Grab the next digit (9) from the dividend, add it to 4, then carry on: 49 / 857

Let's proceed to step 4:
The number 857 fits into 49 0 times, leaving a remainder of 49.
The next digit of our result is 0. 
Result so far: 10.0
Subtracting 0 from 49 leaves us with 49.
Take the next digit (3) from the dividend and append it to 49, then repeat: 493 / 857

Step 5:
The number 857 fits into 493 0 times, leaving a remainder of 493.
The next digit of our result is 0. 
Result so far: 100.0
If we subtract 0 from 493, we get 493.
Grab the next digit (2) from the dividend, add it to 493, then carry on: 4932 / 857

Let's proceed to step 6:
When dividing 4932 by 857, we get 5 with a remainder of 647.
Use 5 as the next digit of our solution. 
Result so far: 1005.0
If we subtract 4285 from 4932, we get 647.
Fetch the next digit (5) from the dividend, attach it to 647 and continue: 6475 / 857

Moving on to step 7:
857 can be fit into 6475 7 times, resulting in a remainder of 476.
The next digit of our result is 7. 
Result so far: 10057.0
If we subtract 5999 from 6475, we get 476.
Take the next digit (3) from the dividend and append it to 476, then repeat: 4763 / 857

Let's proceed to step 8:
If we divide 4763 by 857, we get 5 and a remainder of 478.
The number 5 becomes the next digit in our result. 
Result so far: 100575.0
If we subtract 4285 from 4763, we get 478.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4780, and continue the process.

Moving on to step 9:
If we divide 4780 by 857, we get 5 and a remainder of 495.
Put 5 as the next digit of the answer. 
Result so far: 100575.5
If we take 4285 away from 4780, we end up with 495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Let's proceed to step 10:
The number 857 fits into 4950 5 times, leaving a remainder of 665.
Put 5 as the next digit of the answer. 
Result so far: 100575.55
If we subtract 4285 from 4950, we get 665.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6650, and continue the process.

The quotient of the division is 100575.55, and the remainder is 0.665.