40344721 ÷ 621 
Let's see how many times 621 fits into 40344721.

Let's proceed to step 1:
4 divided by 621 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 621

Moving on to step 2:
The number 621 fits into 40 0 times, leaving a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 40 leaves us with 40.
Append the next digit (3) from the dividend to 40 and continue with: 403 / 621

Going ahead to step 3:
If we divide 403 by 621, we get 0 and a remainder of 403.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 403 after subtracting 0 from 403.
Grab the next digit (4) from the dividend, add it to 403, then carry on: 4034 / 621

Moving on to step 4:
When dividing 4034 by 621, we get 6 with a remainder of 308.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we subtract 3726 from 4034, we get 308.
Append the next digit (4) from the dividend to 308 and continue with: 3084 / 621

Let's proceed to step 5:
If we divide 3084 by 621, we get 4 and a remainder of 600.
Use 4 as the next digit of our solution. 
Result so far: 64.0
If we take 2484 away from 3084, we end up with 600.
Include the next digit (7) from the dividend after 600, then repeat: 6007 / 621

On to step 6:
When dividing 6007 by 621, we get 9 with a remainder of 418.
Put 9 as the next digit of the answer. 
Result so far: 649.0
If we subtract 5589 from 6007, we get 418.
Append the next digit (2) from the dividend to 418 and continue with: 4182 / 621

Let's proceed to step 7:
The number 621 fits into 4182 6 times, leaving a remainder of 456.
The next digit of our result is 6. 
Result so far: 6496.0
If we subtract 3726 from 4182, we get 456.
Append the next digit (1) from the dividend to 456 and continue with: 4561 / 621

On to step 8:
4561 divided by 621 is 7 with a remainder of 214.
Use 7 as the next digit of our solution. 
Result so far: 64967.0
Subtract 4347 from 4561 to get 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Advancing to step 9:
When dividing 2140 by 621, we get 3 with a remainder of 277.
Put 3 as the next digit of the answer. 
Result so far: 64967.3
If we take 1863 away from 2140, we end up with 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

Moving on to step 10:
If we divide 2770 by 621, we get 4 and a remainder of 286.
Put 4 as the next digit of the answer. 
Result so far: 64967.34
If we take 2484 away from 2770, we end up with 286.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2860, and continue the process.

On to step 11:
When dividing 2860 by 621, we get 4 with a remainder of 376.
Put 4 as the next digit of the answer. 
Result so far: 64967.344
The remainder is 376 after subtracting 2484 from 2860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

The quotient of the division is 64967.344, and the remainder is 0.0376.