13230843 divided by 644 
Let's see how many times 644 fits into 13230843.

Step 1:
When dividing 1 by 644, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 644

Let's proceed to step 2:
13 divided by 644 is 0 with a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Grab the next digit (2) from the dividend, add it to 13, then carry on: 132 / 644

Step 3:
644 goes into 132 0 times with a remainder of 132.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 132 and we're left with 132.
Include the next digit (3) from the dividend after 132, then repeat: 1323 / 644

Let's proceed to step 4:
1323 divided by 644 is 2 with a remainder of 35.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 1288 from 1323 leaves us with 35.
Bring next digit (0) of the dividend behind the 35 and repeat the process: 350 / 644

On to step 5:
350 divided by 644 is 0 with a remainder of 350.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
The remainder is 350 after subtracting 0 from 350.
Fetch the next digit (8) from the dividend, attach it to 350 and continue: 3508 / 644

Let's proceed to step 6:
When dividing 3508 by 644, we get 5 with a remainder of 288.
Use 5 as the next digit of our solution. 
Result so far: 205.0
Subtract 3220 from 3508 to get 288.
Take the next digit (4) from the dividend and append it to 288, then repeat: 2884 / 644

Going ahead to step 7:
2884 divided by 644 is 4 with a remainder of 308.
The number 4 becomes the next digit in our result. 
Result so far: 2054.0
If we take 2576 away from 2884, we end up with 308.
Append the next digit (3) from the dividend to 308 and continue with: 3083 / 644

Moving on to step 8:
The number 644 fits into 3083 4 times, leaving a remainder of 507.
The next digit of our result is 4. 
Result so far: 20544.0
Deduct 2576 from 3083 and we're left with 507.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5070, and continue the process.

Moving on to step 9:
The number 644 fits into 5070 7 times, leaving a remainder of 562.
Write down 7 as next digit of the result. 
Result so far: 20544.7
The remainder is 562 after subtracting 4508 from 5070.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5620, and continue the process.

Advancing to step 10:
When dividing 5620 by 644, we get 8 with a remainder of 468.
The next digit of our result is 8. 
Result so far: 20544.78
Deduct 5152 from 5620 and we're left with 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Going ahead to step 11:
The number 644 fits into 4680 7 times, leaving a remainder of 172.
Put 7 as the next digit of the answer. 
Result so far: 20544.787
If we subtract 4508 from 4680, we get 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

On to step 12:
644 can be fit into 1720 2 times, resulting in a remainder of 432.
Use 2 as the next digit of our solution. 
Result so far: 20544.7872
Subtract 1288 from 1720 to get 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Going ahead to step 13:
4320 divided by 644 is 6 with a remainder of 456.
The number 6 becomes the next digit in our result. 
Result so far: 20544.78726
Subtracting 3864 from 4320 leaves us with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

On to step 14:
4560 divided by 644 is 7 with a remainder of 52.
Record the quotient 7 as the next digit in the result. 
Result so far: 20544.787267
The remainder is 52 after subtracting 4508 from 4560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 15:
The number 644 fits into 520 0 times, leaving a remainder of 520.
Record the quotient 0 as the next digit in the result. 
Result so far: 20544.787267
Deduct 0 from 520 and we're left with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Step 16:
644 goes into 5200 8 times with a remainder of 48.
The next digit of our result is 8. 
Result so far: 20544.78726708
If we subtract 5152 from 5200, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

In conclusion, the division gives 20544.78726708 with a balance of 4.8e-08.