We look at the division of 869155 by 57 
We want to divide 869155 by 57.

On to step 1:
If we divide 8 by 57, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 57

On to step 2:
If we divide 86 by 57, we get 1 and a remainder of 29.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 57 from 86, we get 29.
Bring next digit (9) of the dividend behind the 29 and repeat the process: 299 / 57

Going ahead to step 3:
57 goes into 299 5 times with a remainder of 14.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtract 285 from 299 to get 14.
Grab the next digit (1) from the dividend, add it to 14, then carry on: 141 / 57

Step 4:
141 divided by 57 is 2 with a remainder of 27.
Use 2 as the next digit of our solution. 
Result so far: 152.0
The remainder is 27 after subtracting 114 from 141.
Append the next digit (5) from the dividend to 27 and continue with: 275 / 57

Step 5:
57 goes into 275 4 times with a remainder of 47.
Use 4 as the next digit of our solution. 
Result so far: 1524.0
Subtract 228 from 275 to get 47.
Fetch the next digit (5) from the dividend, attach it to 47 and continue: 475 / 57

Going ahead to step 6:
57 goes into 475 8 times with a remainder of 19.
Record the quotient 8 as the next digit in the result. 
Result so far: 15248.0
Deduct 456 from 475 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 7:
190 divided by 57 is 3 with a remainder of 19.
Use 3 as the next digit of our solution. 
Result so far: 15248.3
Subtracting 171 from 190 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 8:
If we divide 190 by 57, we get 3 and a remainder of 19.
The number 3 becomes the next digit in our result. 
Result so far: 15248.33
Subtracting 171 from 190 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The quotient of the division is 15248.33, and the remainder is 0.019.