We look at the division of 663776 by 51 
Let's see how many times 51 fits into 663776.

Let's proceed to step 1:
51 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 51

Step 2:
The number 51 fits into 66 1 times, leaving a remainder of 15.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 51 from 66 and we're left with 15.
Append the next digit (3) from the dividend to 15 and continue with: 153 / 51

Going ahead to step 3:
51 goes into 153 3 times with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtract 153 from 153 to get 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 51

On to step 4:
The number 51 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 130.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 51

Advancing to step 5:
77 divided by 51 is 1 with a remainder of 26.
Record the quotient 1 as the next digit in the result. 
Result so far: 1301.0
If we subtract 51 from 77, we get 26.
Include the next digit (6) from the dividend after 26, then repeat: 266 / 51

On to step 6:
51 can be fit into 266 5 times, resulting in a remainder of 11.
Write down 5 as next digit of the result. 
Result so far: 13015.0
Subtracting 255 from 266 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 7:
When dividing 110 by 51, we get 2 with a remainder of 8.
The next digit of our result is 2. 
Result so far: 13015.2
Subtracting 102 from 110 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 8:
51 can be fit into 80 1 times, resulting in a remainder of 29.
Put 1 as the next digit of the answer. 
Result so far: 13015.21
Subtract 51 from 80 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 9:
51 goes into 290 5 times with a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 13015.215
If we subtract 255 from 290, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 10:
If we divide 350 by 51, we get 6 and a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 13015.2156
If we take 306 away from 350, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 11:
The number 51 fits into 440 8 times, leaving a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 13015.21568
Subtract 408 from 440 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 12:
320 divided by 51 is 6 with a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 13015.215686
If we subtract 306 from 320, we get 14.
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 13:
When dividing 140 by 51, we get 2 with a remainder of 38.
The number 2 becomes the next digit in our result. 
Result so far: 13015.2156862
Subtract 102 from 140 to 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.

Step 14:
380 divided by 51 is 7 with a remainder of 23.
Use 7 as the next digit of our solution. 
Result so far: 13015.21568627
If we subtract 357 from 380, we 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.

The final outcome is 13015.21568627, with a leftover of 2.3e-08.