We look at the division of 490685 by 51 
Let's see how many times 51 fits into 490685.

Advancing to step 1:
When dividing 4 by 51, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 51

Let's proceed to step 2:
51 goes into 49 0 times with a remainder of 49.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 49 after subtracting 0 from 49.
Include the next digit (0) from the dividend after 49, then repeat: 490 / 51

Moving on to step 3:
When dividing 490 by 51, we get 9 with a remainder of 31.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Deduct 459 from 490 and we're left with 31.
Take the next digit (6) from the dividend and append it to 31, then repeat: 316 / 51

Advancing to step 4:
If we divide 316 by 51, we get 6 and a remainder of 10.
The next digit of our result is 6. 
Result so far: 96.0
If we take 306 away from 316, we end up with 10.
Append the next digit (8) from the dividend to 10 and continue with: 108 / 51

Advancing to step 5:
51 can be fit into 108 2 times, resulting in a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 962.0
Deduct 102 from 108 and we're left with 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 51

Going ahead to step 6:
65 divided by 51 is 1 with a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 9621.0
The remainder is 14 after subtracting 51 from 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 7:
51 goes into 140 2 times with a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 9621.2
If we subtract 102 from 140, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 8:
51 goes into 380 7 times with a remainder of 23.
Record the quotient 7 as the next digit in the result. 
Result so far: 9621.27
Subtract 357 from 380 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 9:
51 can be fit into 230 4 times, resulting in a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 9621.274
Subtracting 204 from 230 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 10:
51 goes into 260 5 times with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 9621.2745
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.

Moving on to step 11:
51 can be fit into 50 0 times, resulting in a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 9621.2745
If we subtract 0 from 50, we get 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:
51 goes into 500 9 times with a remainder of 41.
Record the quotient 9 as the next digit in the result. 
Result so far: 9621.274509
The remainder is 41 after subtracting 459 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Step 13:
When dividing 410 by 51, we get 8 with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 9621.2745098
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.

On to step 14:
When dividing 20 by 51, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 9621.2745098
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 9621.2745098 and a remainder of 2e-08.