We look at the division of 63878758 by 904 
We want to divide 63878758 by 904.

Advancing to step 1:
When dividing 6 by 904, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
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 / 904

Step 2:
If we divide 63 by 904, we get 0 and a remainder of 63.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Fetch the next digit (8) from the dividend, attach it to 63 and continue: 638 / 904

Advancing to step 3:
904 can be fit into 638 0 times, resulting in a remainder of 638.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 638 to get 638.
Grab the next digit (7) from the dividend, add it to 638, then carry on: 6387 / 904

On to step 4:
When dividing 6387 by 904, we get 7 with a remainder of 59.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we take 6328 away from 6387, we end up with 59.
Append the next digit (8) from the dividend to 59 and continue with: 598 / 904

Let's proceed to step 5:
904 can be fit into 598 0 times, resulting in a remainder of 598.
The next digit of our result is 0. 
Result so far: 70.0
Subtract 0 from 598 to get 598.
Take the next digit (7) from the dividend and append it to 598, then repeat: 5987 / 904

Let's proceed to step 6:
5987 divided by 904 is 6 with a remainder of 563.
Write down 6 as next digit of the result. 
Result so far: 706.0
If we subtract 5424 from 5987, we get 563.
Include the next digit (5) from the dividend after 563, then repeat: 5635 / 904

On to step 7:
If we divide 5635 by 904, we get 6 and a remainder of 211.
Put 6 as the next digit of the answer. 
Result so far: 7066.0
Deduct 5424 from 5635 and we're left with 211.
Bring next digit (8) of the dividend behind the 211 and repeat the process: 2118 / 904

Going ahead to step 8:
904 goes into 2118 2 times with a remainder of 310.
Use 2 as the next digit of our solution. 
Result so far: 70662.0
Deduct 1808 from 2118 and we're left with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

On to step 9:
3100 divided by 904 is 3 with a remainder of 388.
Record the quotient 3 as the next digit in the result. 
Result so far: 70662.3
Subtracting 2712 from 3100 leaves us with 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

On to step 10:
When dividing 3880 by 904, we get 4 with a remainder of 264.
Record the quotient 4 as the next digit in the result. 
Result so far: 70662.34
If we take 3616 away from 3880, we end up with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Let's proceed to step 11:
904 can be fit into 2640 2 times, resulting in a remainder of 832.
The number 2 becomes the next digit in our result. 
Result so far: 70662.342
If we take 1808 away from 2640, we end up with 832.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8320, and continue the process.

Moving on to step 12:
904 goes into 8320 9 times with a remainder of 184.
The number 9 becomes the next digit in our result. 
Result so far: 70662.3429
If we subtract 8136 from 8320, we get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

On to step 13:
If we divide 1840 by 904, we get 2 and a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 70662.34292
Deduct 1808 from 1840 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 14:
If we divide 320 by 904, we get 0 and a remainder of 320.
The number 0 becomes the next digit in our result. 
Result so far: 70662.34292
If we subtract 0 from 320, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 15:
When dividing 3200 by 904, we get 3 with a remainder of 488.
The number 3 becomes the next digit in our result. 
Result so far: 70662.3429203
The remainder is 488 after subtracting 2712 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Going ahead to step 16:
4880 divided by 904 is 5 with a remainder of 360.
The next digit of our result is 5. 
Result so far: 70662.34292035
Subtract 4520 from 4880 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

The final outcome is 70662.34292035, with a leftover of 3.6e-07.