Let's divide 644857 by 65
We're looking to find how many times 65 goes into 644857.

Advancing to step 1:
65 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 65

On to step 2:
64 divided by 65 is 0 with a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Include the next digit (4) from the dividend after 64, then repeat: 644 / 65

Step 3:
644 divided by 65 is 9 with a remainder of 59.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we subtract 585 from 644, we get 59.
Take the next digit (8) from the dividend and append it to 59, then repeat: 598 / 65

On to step 4:
If we divide 598 by 65, we get 9 and a remainder of 13.
Record the quotient 9 as the next digit in the result. 
Result so far: 99.0
Subtracting 585 from 598 leaves us with 13.
Take the next digit (5) from the dividend and append it to 13, then repeat: 135 / 65

Advancing to step 5:
When dividing 135 by 65, we get 2 with a remainder of 5.
Record the quotient 2 as the next digit in the result. 
Result so far: 992.0
If we take 130 away from 135, we end up with 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 65

Moving on to step 6:
If we divide 57 by 65, we get 0 and a remainder of 57.
Put 0 as the next digit of the answer. 
Result so far: 9920.0
If we take 0 away from 57, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 7:
When dividing 570 by 65, we get 8 with a remainder of 50.
Record the quotient 8 as the next digit in the result. 
Result so far: 9920.8
Subtract 520 from 570 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 8:
When dividing 500 by 65, we get 7 with a remainder of 45.
The next digit of our result is 7. 
Result so far: 9920.87
If we subtract 455 from 500, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 9:
65 can be fit into 450 6 times, resulting in a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 9920.876
The remainder is 60 after subtracting 390 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 10:
65 goes into 600 9 times with a remainder of 15.
The number 9 becomes the next digit in our result. 
Result so far: 9920.8769
If we subtract 585 from 600, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 11:
150 divided by 65 is 2 with a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 9920.87692
Subtract 130 from 150 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 12:
When dividing 200 by 65, we get 3 with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 9920.876923
Subtracting 195 from 200 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 13:
65 goes into 50 0 times with a remainder of 50.
The next digit of our result is 0. 
Result so far: 9920.876923
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 14:
If we divide 500 by 65, we get 7 and a remainder of 45.
Record the quotient 7 as the next digit in the result. 
Result so far: 9920.87692307
If we take 455 away from 500, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

The final result is 9920.87692307 with a remainder of 4.5e-08.