We divide 645939 by 72
Let's see how many times 72 fits into 645939.

Let's proceed to step 1:
72 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 72

Step 2:
The number 72 fits into 64 0 times, leaving a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Fetch the next digit (5) from the dividend, attach it to 64 and continue: 645 / 72

On to step 3:
When dividing 645 by 72, we get 8 with a remainder of 69.
Write down 8 as next digit of the result. 
Result so far: 8.0
The remainder is 69 after subtracting 576 from 645.
Include the next digit (9) from the dividend after 69, then repeat: 699 / 72

Advancing to step 4:
The number 72 fits into 699 9 times, leaving a remainder of 51.
Record the quotient 9 as the next digit in the result. 
Result so far: 89.0
Subtracting 648 from 699 leaves us with 51.
Bring next digit (3) of the dividend behind the 51 and repeat the process: 513 / 72

Moving on to step 5:
513 divided by 72 is 7 with a remainder of 9.
Put 7 as the next digit of the answer. 
Result so far: 897.0
If we subtract 504 from 513, we get 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 72

Moving on to step 6:
72 goes into 99 1 times with a remainder of 27.
The next digit of our result is 1. 
Result so far: 8971.0
If we take 72 away from 99, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 7:
72 goes into 270 3 times with a remainder of 54.
The next digit of our result is 3. 
Result so far: 8971.3
Deduct 216 from 270 and we're left 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.

Let's proceed to step 8:
The number 72 fits into 540 7 times, leaving a remainder of 36.
Write down 7 as next digit of the result. 
Result so far: 8971.37
Subtracting 504 from 540 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 9:
The number 72 fits into 360 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 8971.375
Deduct 360 from 360 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
72 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 8971.375
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 11:
The number 72 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 8971.375
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 8971.375, with a leftover of 0.0.