We're dividing 488139 by 51 
Our goal is to divide 488139 by 51.

Moving on to step 1:
The number 51 fits into 4 0 times, leaving a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 51

On to step 2:
51 goes into 48 0 times with a remainder of 48.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 48, we get 48.
Fetch the next digit (8) from the dividend, attach it to 48 and continue: 488 / 51

Let's proceed to step 3:
If we divide 488 by 51, we get 9 and a remainder of 29.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Deduct 459 from 488 and we're left with 29.
Bring next digit (1) of the dividend behind the 29 and repeat the process: 291 / 51

Let's proceed to step 4:
291 divided by 51 is 5 with a remainder of 36.
Write down 5 as next digit of the result. 
Result so far: 95.0
If we take 255 away from 291, we end up with 36.
Include the next digit (3) from the dividend after 36, then repeat: 363 / 51

Let's proceed to step 5:
If we divide 363 by 51, we get 7 and a remainder of 6.
The next digit of our result is 7. 
Result so far: 957.0
Subtracting 357 from 363 leaves us with 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 51

On to step 6:
51 goes into 69 1 times with a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 9571.0
If we subtract 51 from 69, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 7:
51 goes into 180 3 times with a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 9571.3
Subtract 153 from 180 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 8:
51 can be fit into 270 5 times, resulting in a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 9571.35
If we subtract 255 from 270, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 9:
150 divided by 51 is 2 with a remainder of 48.
The next digit of our result is 2. 
Result so far: 9571.352
If we subtract 102 from 150, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 10:
The number 51 fits into 480 9 times, leaving a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 9571.3529
The remainder is 21 after subtracting 459 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 11:
If we divide 210 by 51, we get 4 and a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 9571.35294
If we subtract 204 from 210, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 12:
51 can be fit into 60 1 times, resulting in a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 9571.352941
If we take 51 away from 60, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 13:
90 divided by 51 is 1 with a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 9571.3529411
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 outcome is 9571.3529411, with a leftover of 3.9e-07.