Let's divide 63879508 by 91
We're looking to find how many times 91 goes into 63879508.

Step 1:
91 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
Subtract 0 from 6 to get 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 91

Step 2:
When dividing 63 by 91, we get 0 with a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 63 and we're left with 63.
Take the next digit (8) from the dividend and append it to 63, then repeat: 638 / 91

Going ahead to step 3:
If we divide 638 by 91, we get 7 and a remainder of 1.
The next digit of our result is 7. 
Result so far: 7.0
Subtract 637 from 638 to get 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 91

On to step 4:
The number 91 fits into 17 0 times, leaving a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 70.0
The remainder is 17 after subtracting 0 from 17.
Bring next digit (9) of the dividend behind the 17 and repeat the process: 179 / 91

On to step 5:
91 goes into 179 1 times with a remainder of 88.
The number 1 becomes the next digit in our result. 
Result so far: 701.0
The remainder is 88 after subtracting 91 from 179.
Include the next digit (5) from the dividend after 88, then repeat: 885 / 91

Step 6:
91 goes into 885 9 times with a remainder of 66.
The number 9 becomes the next digit in our result. 
Result so far: 7019.0
The remainder is 66 after subtracting 819 from 885.
Append the next digit (0) from the dividend to 66 and continue with: 660 / 91

Let's proceed to step 7:
When dividing 660 by 91, we get 7 with a remainder of 23.
The next digit of our result is 7. 
Result so far: 70197.0
Deduct 637 from 660 and we're left with 23.
Append the next digit (8) from the dividend to 23 and continue with: 238 / 91

Moving on to step 8:
When dividing 238 by 91, we get 2 with a remainder of 56.
The number 2 becomes the next digit in our result. 
Result so far: 701972.0
Subtracting 182 from 238 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 9:
The number 91 fits into 560 6 times, leaving a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 701972.6
Deduct 546 from 560 and we're left with 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 10:
The number 91 fits into 140 1 times, leaving a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 701972.61
Subtract 91 from 140 to get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 11:
The number 91 fits into 490 5 times, leaving a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 701972.615
Subtract 455 from 490 to 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.

Going ahead to step 12:
91 can be fit into 350 3 times, resulting in a remainder of 77.
Write down 3 as next digit of the result. 
Result so far: 701972.6153
Subtract 273 from 350 to get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Let's proceed to step 13:
91 can be fit into 770 8 times, resulting in a remainder of 42.
Use 8 as the next digit of our solution. 
Result so far: 701972.61538
Subtract 728 from 770 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 14:
The number 91 fits into 420 4 times, leaving a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 701972.615384
The remainder is 56 after subtracting 364 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 15:
91 can be fit into 560 6 times, resulting in a remainder of 14.
The next digit of our result is 6. 
Result so far: 701972.6153846
Subtracting 546 from 560 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 16:
The number 91 fits into 140 1 times, leaving a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 701972.61538461
Deduct 91 from 140 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

In conclusion, the division gives 701972.61538461 with a balance of 4.9e-08.