We look at the division of 63966080 by 515 
We want to divide 63966080 by 515.

Moving on to step 1:
The number 515 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 515

Advancing to step 2:
63 divided by 515 is 0 with a remainder of 63.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 63 leaves us with 63.
Append the next digit (9) from the dividend to 63 and continue with: 639 / 515

Step 3:
If we divide 639 by 515, we get 1 and a remainder of 124.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 515 from 639 leaves us with 124.
Append the next digit (6) from the dividend to 124 and continue with: 1246 / 515

Going ahead to step 4:
1246 divided by 515 is 2 with a remainder of 216.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtract 1030 from 1246 to get 216.
Fetch the next digit (6) from the dividend, attach it to 216 and continue: 2166 / 515

Let's proceed to step 5:
2166 divided by 515 is 4 with a remainder of 106.
Put 4 as the next digit of the answer. 
Result so far: 124.0
The remainder is 106 after subtracting 2060 from 2166.
Include the next digit (0) from the dividend after 106, then repeat: 1060 / 515

Moving on to step 6:
The number 515 fits into 1060 2 times, leaving a remainder of 30.
Write down 2 as next digit of the result. 
Result so far: 1242.0
If we take 1030 away from 1060, we end up with 30.
Append the next digit (8) from the dividend to 30 and continue with: 308 / 515

Moving on to step 7:
When dividing 308 by 515, we get 0 with a remainder of 308.
Put 0 as the next digit of the answer. 
Result so far: 12420.0
The remainder is 308 after subtracting 0 from 308.
Grab the next digit (0) from the dividend, add it to 308, then carry on: 3080 / 515

Step 8:
515 goes into 3080 5 times with a remainder of 505.
Write down 5 as next digit of the result. 
Result so far: 124205.0
If we take 2575 away from 3080, we end up with 505.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5050, and continue the process.

Let's proceed to step 9:
If we divide 5050 by 515, we get 9 and a remainder of 415.
Put 9 as the next digit of the answer. 
Result so far: 124205.9
If we subtract 4635 from 5050, we get 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Moving on to step 10:
4150 divided by 515 is 8 with a remainder of 30.
Use 8 as the next digit of our solution. 
Result so far: 124205.98
If we subtract 4120 from 4150, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 11:
515 goes into 300 0 times with a remainder of 300.
Use 0 as the next digit of our solution. 
Result so far: 124205.98
Deduct 0 from 300 and we're left with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 12:
When dividing 3000 by 515, we get 5 with a remainder of 425.
Record the quotient 5 as the next digit in the result. 
Result so far: 124205.9805
Subtract 2575 from 3000 to get 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Moving on to step 13:
If we divide 4250 by 515, we get 8 and a remainder of 130.
The next digit of our result is 8. 
Result so far: 124205.98058
The remainder is 130 after subtracting 4120 from 4250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

On to step 14:
1300 divided by 515 is 2 with a remainder of 270.
Put 2 as the next digit of the answer. 
Result so far: 124205.980582
The remainder is 270 after subtracting 1030 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Step 15:
The number 515 fits into 2700 5 times, leaving a remainder of 125.
The number 5 becomes the next digit in our result. 
Result so far: 124205.9805825
The remainder is 125 after subtracting 2575 from 2700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 16:
515 can be fit into 1250 2 times, resulting in a remainder of 220.
Put 2 as the next digit of the answer. 
Result so far: 124205.98058252
If we subtract 1030 from 1250, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

After the division, we end up with 124205.98058252 and a remainder of 2.2e-07.