We look at the division of 63940671 by 829 
Our goal is to divide 63940671 by 829.

Let's proceed to step 1:
829 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the 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 / 829

Step 2:
If we divide 63 by 829, we get 0 and a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 63 and we're left with 63.
Append the next digit (9) from the dividend to 63 and continue with: 639 / 829

On to step 3:
829 goes into 639 0 times with a remainder of 639.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 639 after subtracting 0 from 639.
Grab the next digit (4) from the dividend, add it to 639, then carry on: 6394 / 829

Advancing to step 4:
829 goes into 6394 7 times with a remainder of 591.
The next digit of our result is 7. 
Result so far: 7.0
The remainder is 591 after subtracting 5803 from 6394.
Include the next digit (0) from the dividend after 591, then repeat: 5910 / 829

On to step 5:
829 goes into 5910 7 times with a remainder of 107.
Record the quotient 7 as the next digit in the result. 
Result so far: 77.0
If we subtract 5803 from 5910, we get 107.
Take the next digit (6) from the dividend and append it to 107, then repeat: 1076 / 829

Moving on to step 6:
829 can be fit into 1076 1 times, resulting in a remainder of 247.
The next digit of our result is 1. 
Result so far: 771.0
The remainder is 247 after subtracting 829 from 1076.
Include the next digit (7) from the dividend after 247, then repeat: 2477 / 829

Let's proceed to step 7:
829 goes into 2477 2 times with a remainder of 819.
Write down 2 as next digit of the result. 
Result so far: 7712.0
If we subtract 1658 from 2477, we get 819.
Fetch the next digit (1) from the dividend, attach it to 819 and continue: 8191 / 829

Let's proceed to step 8:
8191 divided by 829 is 9 with a remainder of 730.
Use 9 as the next digit of our solution. 
Result so far: 77129.0
If we take 7461 away from 8191, we end up with 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7300, and continue the process.

Let's proceed to step 9:
829 can be fit into 7300 8 times, resulting in a remainder of 668.
Write down 8 as next digit of the result. 
Result so far: 77129.8
If we take 6632 away from 7300, we end up with 668.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6680, and continue the process.

Moving on to step 10:
When dividing 6680 by 829, we get 8 with a remainder of 48.
The next digit of our result is 8. 
Result so far: 77129.88
If we subtract 6632 from 6680, 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.

The final outcome is 77129.88, with a leftover of 0.048.