40191906 divided by 721 
We're looking to find how many times 721 goes into 40191906.

Step 1:
721 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 721

On to step 2:
721 goes into 40 0 times with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 40 to get 40.
Include the next digit (1) from the dividend after 40, then repeat: 401 / 721

Moving on to step 3:
When dividing 401 by 721, we get 0 with a remainder of 401.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 401 leaves us with 401.
Fetch the next digit (9) from the dividend, attach it to 401 and continue: 4019 / 721

Advancing to step 4:
721 goes into 4019 5 times with a remainder of 414.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Deduct 3605 from 4019 and we're left with 414.
Include the next digit (1) from the dividend after 414, then repeat: 4141 / 721

Going ahead to step 5:
721 goes into 4141 5 times with a remainder of 536.
The next digit of our result is 5. 
Result so far: 55.0
Subtract 3605 from 4141 to get 536.
Grab the next digit (9) from the dividend, add it to 536, then carry on: 5369 / 721

Advancing to step 6:
5369 divided by 721 is 7 with a remainder of 322.
Put 7 as the next digit of the answer. 
Result so far: 557.0
Deduct 5047 from 5369 and we're left with 322.
Include the next digit (0) from the dividend after 322, then repeat: 3220 / 721

On to step 7:
The number 721 fits into 3220 4 times, leaving a remainder of 336.
The number 4 becomes the next digit in our result. 
Result so far: 5574.0
Deduct 2884 from 3220 and we're left with 336.
Append the next digit (6) from the dividend to 336 and continue with: 3366 / 721

Going ahead to step 8:
If we divide 3366 by 721, we get 4 and a remainder of 482.
Record the quotient 4 as the next digit in the result. 
Result so far: 55744.0
Subtract 2884 from 3366 to get 482.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4820, and continue the process.

Going ahead to step 9:
When dividing 4820 by 721, we get 6 with a remainder of 494.
Use 6 as the next digit of our solution. 
Result so far: 55744.6
If we take 4326 away from 4820, we end up with 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

Advancing to step 10:
721 can be fit into 4940 6 times, resulting in a remainder of 614.
Write down 6 as next digit of the result. 
Result so far: 55744.66
If we take 4326 away from 4940, we end up with 614.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6140, and continue the process.

The final result is 55744.66 with a remainder of 0.614.