860748 divided by 51 
We're looking to find how many times 51 goes into 860748.

Step 1:
If we divide 8 by 51, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the 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 / 51

Let's proceed to step 2:
86 divided by 51 is 1 with a remainder of 35.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 51 from 86 leaves us with 35.
Take the next digit (0) from the dividend and append it to 35, then repeat: 350 / 51

Let's proceed to step 3:
The number 51 fits into 350 6 times, leaving a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 16.0
If we take 306 away from 350, we end up with 44.
Fetch the next digit (7) from the dividend, attach it to 44 and continue: 447 / 51

Advancing to step 4:
51 goes into 447 8 times with a remainder of 39.
The next digit of our result is 8. 
Result so far: 168.0
Deduct 408 from 447 and we're left with 39.
Append the next digit (4) from the dividend to 39 and continue with: 394 / 51

Advancing to step 5:
394 divided by 51 is 7 with a remainder of 37.
Use 7 as the next digit of our solution. 
Result so far: 1687.0
If we take 357 away from 394, we end up with 37.
Fetch the next digit (8) from the dividend, attach it to 37 and continue: 378 / 51

On to step 6:
51 goes into 378 7 times with a remainder of 21.
Use 7 as the next digit of our solution. 
Result so far: 16877.0
Subtract 357 from 378 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 7:
210 divided by 51 is 4 with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 16877.4
Subtracting 204 from 210 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 8:
60 divided by 51 is 1 with a remainder of 9.
The next digit of our result is 1. 
Result so far: 16877.41
If we subtract 51 from 60, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 9:
When dividing 90 by 51, we get 1 with a remainder of 39.
The next digit of our result is 1. 
Result so far: 16877.411
Deduct 51 from 90 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

The final result is 16877.411 with a remainder of 0.0039.