615868 ÷ 51 
Our goal is to divide 615868 by 51.

Moving on to step 1:
If we divide 6 by 51, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 51

Moving on to step 2:
51 can be fit into 61 1 times, resulting in a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 51 from 61, we get 10.
Bring next digit (5) of the dividend behind the 10 and repeat the process: 105 / 51

Advancing to step 3:
If we divide 105 by 51, we get 2 and a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we subtract 102 from 105, we get 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 51

Moving on to step 4:
If we divide 38 by 51, we get 0 and a remainder of 38.
Write down 0 as next digit of the result. 
Result so far: 120.0
The remainder is 38 after subtracting 0 from 38.
Fetch the next digit (6) from the dividend, attach it to 38 and continue: 386 / 51

Step 5:
The number 51 fits into 386 7 times, leaving a remainder of 29.
Put 7 as the next digit of the answer. 
Result so far: 1207.0
Subtracting 357 from 386 leaves us with 29.
Append the next digit (8) from the dividend to 29 and continue with: 298 / 51

On to step 6:
51 can be fit into 298 5 times, resulting in a remainder of 43.
The next digit of our result is 5. 
Result so far: 12075.0
Deduct 255 from 298 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 7:
If we divide 430 by 51, we get 8 and a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 12075.8
If we subtract 408 from 430, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 8:
If we divide 220 by 51, we get 4 and a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 12075.84
Deduct 204 from 220 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 9:
160 divided by 51 is 3 with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 12075.843
The remainder is 7 after subtracting 153 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 10:
When dividing 70 by 51, we get 1 with a remainder of 19.
The next digit of our result is 1. 
Result so far: 12075.8431
If we subtract 51 from 70, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 11:
If we divide 190 by 51, we get 3 and a remainder of 37.
The next digit of our result is 3. 
Result so far: 12075.84313
If we subtract 153 from 190, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 12:
When dividing 370 by 51, we get 7 with a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 12075.843137
Deduct 357 from 370 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 13:
51 goes into 130 2 times with a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 12075.8431372
If we subtract 102 from 130, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 14:
280 divided by 51 is 5 with a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 12075.84313725
Subtracting 255 from 280 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final result is 12075.84313725 with a remainder of 2.5e-08.