We look at the division of 63901 by 91 
We want to figure out the number of times 63901 can be divided by 91.

On to step 1:
6 divided by 91 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 91

Going ahead to step 2:
91 goes into 63 0 times with a remainder of 63.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 63, we end up with 63.
Include the next digit (9) from the dividend after 63, then repeat: 639 / 91

Let's proceed to step 3:
If we divide 639 by 91, we get 7 and a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we subtract 637 from 639, we get 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 91

Step 4:
20 divided by 91 is 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 70.0
If we take 0 away from 20, we end up with 20.
Grab the next digit (1) from the dividend, add it to 20, then carry on: 201 / 91

Let's proceed to step 5:
If we divide 201 by 91, we get 2 and a remainder of 19.
The number 2 becomes the next digit in our result. 
Result so far: 702.0
If we take 182 away from 201, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 6:
91 can be fit into 190 2 times, resulting in a remainder of 8.
The next digit of our result is 2. 
Result so far: 702.2
The remainder is 8 after subtracting 182 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 7:
The number 91 fits into 80 0 times, leaving a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 702.2
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 8:
800 divided by 91 is 8 with a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 702.208
The remainder is 72 after subtracting 728 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 9:
720 divided by 91 is 7 with a remainder of 83.
Put 7 as the next digit of the answer. 
Result so far: 702.2087
Subtracting 637 from 720 leaves us with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Moving on to step 10:
91 goes into 830 9 times with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 702.20879
Subtract 819 from 830 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 11:
The number 91 fits into 110 1 times, leaving a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 702.208791
Deduct 91 from 110 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 12:
When dividing 190 by 91, we get 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 702.2087912
Subtracting 182 from 190 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 13:
The number 91 fits into 80 0 times, leaving a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 702.2087912
Subtracting 0 from 80 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

After the division, we end up with 702.2087912 and a remainder of 8e-08.