641807 divided by 91 
We want to figure out the number of times 641807 can be divided by 91.

Step 1:
If we divide 6 by 91, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 91

On to step 2:
91 goes into 64 0 times with a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Append the next digit (1) from the dividend to 64 and continue with: 641 / 91

Going ahead to step 3:
If we divide 641 by 91, we get 7 and a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 7.0
The remainder is 4 after subtracting 637 from 641.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 91

Advancing to step 4:
The number 91 fits into 48 0 times, leaving a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 70.0
Subtracting 0 from 48 leaves us with 48.
Take the next digit (0) from the dividend and append it to 48, then repeat: 480 / 91

Let's proceed to step 5:
91 goes into 480 5 times with a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 705.0
The remainder is 25 after subtracting 455 from 480.
Take the next digit (7) from the dividend and append it to 25, then repeat: 257 / 91

On to step 6:
If we divide 257 by 91, we get 2 and a remainder of 75.
Write down 2 as next digit of the result. 
Result so far: 7052.0
If we take 182 away from 257, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 7:
91 goes into 750 8 times with a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 7052.8
Subtract 728 from 750 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 8:
220 divided by 91 is 2 with a remainder of 38.
The number 2 becomes the next digit in our result. 
Result so far: 7052.82
Deduct 182 from 220 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 9:
When dividing 380 by 91, we get 4 with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 7052.824
Deduct 364 from 380 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 10:
The number 91 fits into 160 1 times, leaving a remainder of 69.
The number 1 becomes the next digit in our result. 
Result so far: 7052.8241
Subtract 91 from 160 to get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 11:
The number 91 fits into 690 7 times, leaving a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 7052.82417
The remainder is 53 after subtracting 637 from 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 12:
If we divide 530 by 91, we get 5 and a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 7052.824175
Deduct 455 from 530 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 13:
When dividing 750 by 91, we get 8 with a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 7052.8241758
If we subtract 728 from 750, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 14:
91 can be fit into 220 2 times, resulting in a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 7052.82417582
Deduct 182 from 220 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

After the division, we end up with 7052.82417582 and a remainder of 3.8e-08.