We're dividing 72439962 by 721 
We want to figure out the number of times 72439962 can be divided by 721.

On to step 1:
If we divide 7 by 721, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 721

On to step 2:
721 goes into 72 0 times with a remainder of 72.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Bring next digit (4) of the dividend behind the 72 and repeat the process: 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
Subtract 721 from 724 to get 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 721

Moving on to step 4:
The number 721 fits into 33 0 times, leaving a remainder of 33.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
The remainder is 33 after subtracting 0 from 33.
Take the next digit (9) from the dividend and append it to 33, then repeat: 339 / 721

Moving on to step 5:
When dividing 339 by 721, we get 0 with a remainder of 339.
The number 0 becomes the next digit in our result. 
Result so far: 100.0
Subtract 0 from 339 to get 339.
Bring next digit (9) of the dividend behind the 339 and repeat the process: 3399 / 721

Step 6:
3399 divided by 721 is 4 with a remainder of 515.
The next digit of our result is 4. 
Result so far: 1004.0
If we take 2884 away from 3399, we end up with 515.
Fetch the next digit (6) from the dividend, attach it to 515 and continue: 5156 / 721

Advancing to step 7:
721 can be fit into 5156 7 times, resulting in a remainder of 109.
Write down 7 as next digit of the result. 
Result so far: 10047.0
Deduct 5047 from 5156 and we're left with 109.
Fetch the next digit (2) from the dividend, attach it to 109 and continue: 1092 / 721

Going ahead to step 8:
721 can be fit into 1092 1 times, resulting in a remainder of 371.
Use 1 as the next digit of our solution. 
Result so far: 100471.0
If we take 721 away from 1092, we end up with 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

Going ahead to step 9:
When dividing 3710 by 721, we get 5 with a remainder of 105.
Use 5 as the next digit of our solution. 
Result so far: 100471.5
Deduct 3605 from 3710 and we're left with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Going ahead to step 10:
721 can be fit into 1050 1 times, resulting in a remainder of 329.
The next digit of our result is 1. 
Result so far: 100471.51
If we take 721 away from 1050, we end up with 329.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3290, and continue the process.

Going ahead to step 11:
When dividing 3290 by 721, we get 4 with a remainder of 406.
Use 4 as the next digit of our solution. 
Result so far: 100471.514
Subtract 2884 from 3290 to get 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

On to step 12:
721 goes into 4060 5 times with a remainder of 455.
Write down 5 as next digit of the result. 
Result so far: 100471.5145
Subtract 3605 from 4060 to get 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Let's proceed to step 13:
When dividing 4550 by 721, we get 6 with a remainder of 224.
Use 6 as the next digit of our solution. 
Result so far: 100471.51456
If we take 4326 away from 4550, we end up with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Step 14:
721 can be fit into 2240 3 times, resulting in a remainder of 77.
Write down 3 as next digit of the result. 
Result so far: 100471.514563
If we take 2163 away from 2240, we end up with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

On to step 15:
When dividing 770 by 721, we get 1 with a remainder of 49.
The number 1 becomes the next digit in our result. 
Result so far: 100471.5145631
If we subtract 721 from 770, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 16:
The number 721 fits into 490 0 times, leaving a remainder of 490.
Write down 0 as next digit of the result. 
Result so far: 100471.5145631
Subtract 0 from 490 to get 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

The final result is 100471.5145631 with a remainder of 4.9e-07.