645521 divided by 72 
Let's see how many times 72 fits into 645521.

Going ahead to step 1:
If we divide 6 by 72, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 72

Step 2:
72 goes into 64 0 times with a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Take the next digit (5) from the dividend and append it to 64, then repeat: 645 / 72

Step 3:
72 goes into 645 8 times with a remainder of 69.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
If we take 576 away from 645, we end up with 69.
Include the next digit (5) from the dividend after 69, then repeat: 695 / 72

Advancing to step 4:
The number 72 fits into 695 9 times, leaving a remainder of 47.
Use 9 as the next digit of our solution. 
Result so far: 89.0
The remainder is 47 after subtracting 648 from 695.
Bring next digit (2) of the dividend behind the 47 and repeat the process: 472 / 72

Going ahead to step 5:
When dividing 472 by 72, we get 6 with a remainder of 40.
Record the quotient 6 as the next digit in the result. 
Result so far: 896.0
If we take 432 away from 472, we end up with 40.
Fetch the next digit (1) from the dividend, attach it to 40 and continue: 401 / 72

Going ahead to step 6:
72 can be fit into 401 5 times, resulting in a remainder of 41.
Write down 5 as next digit of the result. 
Result so far: 8965.0
If we take 360 away from 401, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Going ahead to step 7:
If we divide 410 by 72, we get 5 and a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 8965.5
The remainder is 50 after subtracting 360 from 410.
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:
500 divided by 72 is 6 with a remainder of 68.
The number 6 becomes the next digit in our result. 
Result so far: 8965.56
Subtracting 432 from 500 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 9:
72 can be fit into 680 9 times, resulting in a remainder of 32.
The number 9 becomes the next digit in our result. 
Result so far: 8965.569
Subtract 648 from 680 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 10:
72 goes into 320 4 times with a remainder of 32.
Put 4 as the next digit of the answer. 
Result so far: 8965.5694
Subtract 288 from 320 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 11:
If we divide 320 by 72, we get 4 and a remainder of 32.
Record the quotient 4 as the next digit in the result. 
Result so far: 8965.56944
Deduct 288 from 320 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

In conclusion, the division gives 8965.56944 with a balance of 3.2e-05.