We look at the division of 72484539 by 721 
We want to figure out the number of times 72484539 can be divided by 721.

Let's proceed to step 1:
The number 721 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 721

Going ahead to step 2:
When dividing 72 by 721, we get 0 with a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Grab the next digit (4) from the dividend, add it to 72, then carry on: 724 / 721

Moving on to step 3:
The number 721 fits into 724 1 times, leaving a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 721 away from 724, we end up with 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 721

Let's proceed to step 4:
If we divide 38 by 721, we get 0 and a remainder of 38.
The next digit of our result is 0. 
Result so far: 10.0
Subtracting 0 from 38 leaves us with 38.
Append the next digit (4) from the dividend to 38 and continue with: 384 / 721

On to step 5:
The number 721 fits into 384 0 times, leaving a remainder of 384.
Put 0 as the next digit of the answer. 
Result so far: 100.0
If we take 0 away from 384, we end up with 384.
Bring next digit (5) of the dividend behind the 384 and repeat the process: 3845 / 721

Let's proceed to step 6:
If we divide 3845 by 721, we get 5 and a remainder of 240.
The number 5 becomes the next digit in our result. 
Result so far: 1005.0
Subtracting 3605 from 3845 leaves us with 240.
Grab the next digit (3) from the dividend, add it to 240, then carry on: 2403 / 721

Step 7:
If we divide 2403 by 721, we get 3 and a remainder of 240.
Record the quotient 3 as the next digit in the result. 
Result so far: 10053.0
Subtract 2163 from 2403 to get 240.
Fetch the next digit (9) from the dividend, attach it to 240 and continue: 2409 / 721

On to step 8:
If we divide 2409 by 721, we get 3 and a remainder of 246.
Write down 3 as next digit of the result. 
Result so far: 100533.0
The remainder is 246 after subtracting 2163 from 2409.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Step 9:
721 goes into 2460 3 times with a remainder of 297.
Put 3 as the next digit of the answer. 
Result so far: 100533.3
The remainder is 297 after subtracting 2163 from 2460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Advancing to step 10:
721 goes into 2970 4 times with a remainder of 86.
The number 4 becomes the next digit in our result. 
Result so far: 100533.34
Deduct 2884 from 2970 and we're left with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Moving on to step 11:
When dividing 860 by 721, we get 1 with a remainder of 139.
Use 1 as the next digit of our solution. 
Result so far: 100533.341
Deduct 721 from 860 and we're left with 139.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

Let's proceed to step 12:
721 goes into 1390 1 times with a remainder of 669.
The next digit of our result is 1. 
Result so far: 100533.3411
If we take 721 away from 1390, we end up with 669.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6690, and continue the process.

The final result is 100533.3411 with a remainder of 0.00669.