We're dividing 86621 by 57 
We're looking to find how many times 57 goes into 86621.

Moving on to step 1:
8 divided by 57 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 57

Going ahead to step 2:
When dividing 86 by 57, we get 1 with a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 29 after subtracting 57 from 86.
Grab the next digit (6) from the dividend, add it to 29, then carry on: 296 / 57

On to step 3:
296 divided by 57 is 5 with a remainder of 11.
Use 5 as the next digit of our solution. 
Result so far: 15.0
The remainder is 11 after subtracting 285 from 296.
Fetch the next digit (2) from the dividend, attach it to 11 and continue: 112 / 57

Moving on to step 4:
The number 57 fits into 112 1 times, leaving a remainder of 55.
Record the quotient 1 as the next digit in the result. 
Result so far: 151.0
If we take 57 away from 112, we end up with 55.
Include the next digit (1) from the dividend after 55, then repeat: 551 / 57

Moving on to step 5:
57 goes into 551 9 times with a remainder of 38.
The number 9 becomes the next digit in our result. 
Result so far: 1519.0
Subtracting 513 from 551 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 6:
57 goes into 380 6 times with a remainder of 38.
Write down 6 as next digit of the result. 
Result so far: 1519.6
Subtracting 342 from 380 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 7:
When dividing 380 by 57, we get 6 with a remainder of 38.
The number 6 becomes the next digit in our result. 
Result so far: 1519.66
The remainder is 38 after subtracting 342 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The quotient of the division is 1519.66, and the remainder is 0.038.