Let's divide 63940093 by 878
We're looking to find how many times 878 goes into 63940093.

Going ahead to step 1:
878 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 878

Advancing to step 2:
The number 878 fits into 63 0 times, leaving a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 63, we end up with 63.
Take the next digit (9) from the dividend and append it to 63, then repeat: 639 / 878

On to step 3:
878 goes into 639 0 times with a remainder of 639.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 639 after subtracting 0 from 639.
Fetch the next digit (4) from the dividend, attach it to 639 and continue: 6394 / 878

Step 4:
The number 878 fits into 6394 7 times, leaving a remainder of 248.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 6146 from 6394, we get 248.
Include the next digit (0) from the dividend after 248, then repeat: 2480 / 878

Step 5:
2480 divided by 878 is 2 with a remainder of 724.
The next digit of our result is 2. 
Result so far: 72.0
Subtracting 1756 from 2480 leaves us with 724.
Take the next digit (0) from the dividend and append it to 724, then repeat: 7240 / 878

On to step 6:
7240 divided by 878 is 8 with a remainder of 216.
The number 8 becomes the next digit in our result. 
Result so far: 728.0
If we subtract 7024 from 7240, we get 216.
Take the next digit (9) from the dividend and append it to 216, then repeat: 2169 / 878

Moving on to step 7:
878 can be fit into 2169 2 times, resulting in a remainder of 413.
The number 2 becomes the next digit in our result. 
Result so far: 7282.0
The remainder is 413 after subtracting 1756 from 2169.
Bring next digit (3) of the dividend behind the 413 and repeat the process: 4133 / 878

Advancing to step 8:
878 goes into 4133 4 times with a remainder of 621.
Use 4 as the next digit of our solution. 
Result so far: 72824.0
The remainder is 621 after subtracting 3512 from 4133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6210, and continue the process.

Going ahead to step 9:
878 can be fit into 6210 7 times, resulting in a remainder of 64.
Use 7 as the next digit of our solution. 
Result so far: 72824.7
Subtract 6146 from 6210 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 10:
878 can be fit into 640 0 times, resulting in a remainder of 640.
Put 0 as the next digit of the answer. 
Result so far: 72824.7
Subtract 0 from 640 to get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Step 11:
878 can be fit into 6400 7 times, resulting in a remainder of 254.
Use 7 as the next digit of our solution. 
Result so far: 72824.707
Deduct 6146 from 6400 and we're left with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

On to step 12:
2540 divided by 878 is 2 with a remainder of 784.
The next digit of our result is 2. 
Result so far: 72824.7072
If we take 1756 away from 2540, we end up with 784.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7840, and continue the process.

On to step 13:
878 can be fit into 7840 8 times, resulting in a remainder of 816.
Put 8 as the next digit of the answer. 
Result so far: 72824.70728
Subtract 7024 from 7840 to get 816.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8160, and continue the process.

Let's proceed to step 14:
When dividing 8160 by 878, we get 9 with a remainder of 258.
Use 9 as the next digit of our solution. 
Result so far: 72824.707289
If we take 7902 away from 8160, we end up with 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

On to step 15:
878 can be fit into 2580 2 times, resulting in a remainder of 824.
Use 2 as the next digit of our solution. 
Result so far: 72824.7072892
Deduct 1756 from 2580 and we're left with 824.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8240, and continue the process.

Moving on to step 16:
The number 878 fits into 8240 9 times, leaving a remainder of 338.
The next digit of our result is 9. 
Result so far: 72824.70728929
Deduct 7902 from 8240 and we're left with 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

Our division results in 72824.70728929 with a remaining 3.38e-07.