859721 ÷ 51 
Our goal is to divide 859721 by 51.

Going ahead to step 1:
When dividing 8 by 51, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 51

Moving on to step 2:
If we divide 85 by 51, we get 1 and a remainder of 34.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 51 from 85 and we're left with 34.
Append the next digit (9) from the dividend to 34 and continue with: 349 / 51

Step 3:
If we divide 349 by 51, we get 6 and a remainder of 43.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
If we take 306 away from 349, we end up with 43.
Bring next digit (7) of the dividend behind the 43 and repeat the process: 437 / 51

Let's proceed to step 4:
437 divided by 51 is 8 with a remainder of 29.
Use 8 as the next digit of our solution. 
Result so far: 168.0
If we take 408 away from 437, we end up with 29.
Fetch the next digit (2) from the dividend, attach it to 29 and continue: 292 / 51

Going ahead to step 5:
51 can be fit into 292 5 times, resulting in a remainder of 37.
Record the quotient 5 as the next digit in the result. 
Result so far: 1685.0
Deduct 255 from 292 and we're left with 37.
Bring next digit (1) of the dividend behind the 37 and repeat the process: 371 / 51

Let's proceed to step 6:
If we divide 371 by 51, we get 7 and a remainder of 14.
The next digit of our result is 7. 
Result so far: 16857.0
The remainder is 14 after subtracting 357 from 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 7:
When dividing 140 by 51, we get 2 with a remainder of 38.
The next digit of our result is 2. 
Result so far: 16857.2
Subtracting 102 from 140 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.

On to step 8:
51 can be fit into 380 7 times, resulting in a remainder of 23.
The next digit of our result is 7. 
Result so far: 16857.27
The remainder is 23 after subtracting 357 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 9:
230 divided by 51 is 4 with a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 16857.274
If we subtract 204 from 230, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 10:
If we divide 260 by 51, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 16857.2745
If we take 255 away from 260, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 11:
If we divide 50 by 51, we get 0 and a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 16857.2745
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 12:
When dividing 500 by 51, we get 9 with a remainder of 41.
The next digit of our result is 9. 
Result so far: 16857.274509
If we take 459 away from 500, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

On to step 13:
51 goes into 410 8 times with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 16857.2745098
Subtract 408 from 410 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 14:
51 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 16857.2745098
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 16857.2745098 with a balance of 2e-08.