We're dividing 64105840 by 91 
We want to divide 64105840 by 91.

Moving 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 (4) from the dividend and append it to 6, then repeat: 64 / 91

Advancing to step 2:
The number 91 fits into 64 0 times, leaving a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Bring next digit (1) of the dividend behind the 64 and repeat the process: 641 / 91

Going ahead to step 3:
The number 91 fits into 641 7 times, leaving a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtracting 637 from 641 leaves us with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 91

On to step 4:
91 goes into 40 0 times with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 70.0
Subtracting 0 from 40 leaves us with 40.
Bring next digit (5) of the dividend behind the 40 and repeat the process: 405 / 91

Moving on to step 5:
405 divided by 91 is 4 with a remainder of 41.
Record the quotient 4 as the next digit in the result. 
Result so far: 704.0
Subtract 364 from 405 to get 41.
Fetch the next digit (8) from the dividend, attach it to 41 and continue: 418 / 91

Moving on to step 6:
91 can be fit into 418 4 times, resulting in a remainder of 54.
The number 4 becomes the next digit in our result. 
Result so far: 7044.0
If we subtract 364 from 418, we get 54.
Take the next digit (4) from the dividend and append it to 54, then repeat: 544 / 91

Moving on to step 7:
91 can be fit into 544 5 times, resulting in a remainder of 89.
Record the quotient 5 as the next digit in the result. 
Result so far: 70445.0
The remainder is 89 after subtracting 455 from 544.
Take the next digit (0) from the dividend and append it to 89, then repeat: 890 / 91

Step 8:
91 goes into 890 9 times with a remainder of 71.
The number 9 becomes the next digit in our result. 
Result so far: 704459.0
Subtracting 819 from 890 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 9:
The number 91 fits into 710 7 times, leaving a remainder of 73.
The number 7 becomes the next digit in our result. 
Result so far: 704459.7
If we take 637 away from 710, we end up with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

On to step 10:
91 can be fit into 730 8 times, resulting in a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 704459.78
The remainder is 2 after subtracting 728 from 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 11:
When dividing 20 by 91, we get 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 704459.78
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 12:
When dividing 200 by 91, we get 2 with a remainder of 18.
The next digit of our result is 2. 
Result so far: 704459.7802
The remainder is 18 after subtracting 182 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 13:
If we divide 180 by 91, we get 1 and a remainder of 89.
Record the quotient 1 as the next digit in the result. 
Result so far: 704459.78021
If we subtract 91 from 180, we get 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Step 14:
890 divided by 91 is 9 with a remainder of 71.
The next digit of our result is 9. 
Result so far: 704459.780219
If we subtract 819 from 890, we get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 15:
710 divided by 91 is 7 with a remainder of 73.
The number 7 becomes the next digit in our result. 
Result so far: 704459.7802197
If we subtract 637 from 710, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 16:
The number 91 fits into 730 8 times, leaving a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 704459.78021978
Subtracting 728 from 730 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 704459.78021978, with a leftover of 2e-09.