Let's divide 644013 by 91
Let's see how many times 91 fits into 644013.

Step 1:
When dividing 6 by 91, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 91

Moving on to step 2:
64 divided by 91 is 0 with a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Append the next digit (4) from the dividend to 64 and continue with: 644 / 91

Step 3:
644 divided by 91 is 7 with a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 637 from 644 to get 7.
Append the next digit (0) from the dividend to 7 and continue with: 70 / 91

Let's proceed to step 4:
91 can be fit into 70 0 times, resulting in a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 70.0
If we take 0 away from 70, we end up with 70.
Bring next digit (1) of the dividend behind the 70 and repeat the process: 701 / 91

Let's proceed to step 5:
The number 91 fits into 701 7 times, leaving a remainder of 64.
Put 7 as the next digit of the answer. 
Result so far: 707.0
If we subtract 637 from 701, we get 64.
Include the next digit (3) from the dividend after 64, then repeat: 643 / 91

Going ahead to step 6:
The number 91 fits into 643 7 times, leaving a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 7077.0
Subtracting 637 from 643 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 7:
60 divided by 91 is 0 with a remainder of 60.
The next digit of our result is 0. 
Result so far: 7077.0
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 8:
If we divide 600 by 91, we get 6 and a remainder of 54.
Put 6 as the next digit of the answer. 
Result so far: 7077.06
Subtract 546 from 600 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 9:
When dividing 540 by 91, we get 5 with a remainder of 85.
Record the quotient 5 as the next digit in the result. 
Result so far: 7077.065
Subtracting 455 from 540 leaves us with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Step 10:
91 can be fit into 850 9 times, resulting in a remainder of 31.
Use 9 as the next digit of our solution. 
Result so far: 7077.0659
If we take 819 away from 850, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 11:
91 can be fit into 310 3 times, resulting in a remainder of 37.
Put 3 as the next digit of the answer. 
Result so far: 7077.06593
If we take 273 away from 310, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 12:
When dividing 370 by 91, we get 4 with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 7077.065934
Subtract 364 from 370 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 13:
60 divided by 91 is 0 with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 7077.065934
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 14:
When dividing 600 by 91, we get 6 with a remainder of 54.
The number 6 becomes the next digit in our result. 
Result so far: 7077.06593406
Subtracting 546 from 600 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Our division results in 7077.06593406 with a remaining 5.4e-08.