23970019 divided by 621 
We're looking to find how many times 621 goes into 23970019.

Going ahead to step 1:
2 divided by 621 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 621

On to step 2:
23 divided by 621 is 0 with a remainder of 23.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 23 leaves us with 23.
Take the next digit (9) from the dividend and append it to 23, then repeat: 239 / 621

On to step 3:
The number 621 fits into 239 0 times, leaving a remainder of 239.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 239, we get 239.
Grab the next digit (7) from the dividend, add it to 239, then carry on: 2397 / 621

Moving on to step 4:
When dividing 2397 by 621, we get 3 with a remainder of 534.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 534 after subtracting 1863 from 2397.
Include the next digit (0) from the dividend after 534, then repeat: 5340 / 621

Advancing to step 5:
The number 621 fits into 5340 8 times, leaving a remainder of 372.
Put 8 as the next digit of the answer. 
Result so far: 38.0
Subtract 4968 from 5340 to get 372.
Fetch the next digit (0) from the dividend, attach it to 372 and continue: 3720 / 621

Going ahead to step 6:
If we divide 3720 by 621, we get 5 and a remainder of 615.
Use 5 as the next digit of our solution. 
Result so far: 385.0
The remainder is 615 after subtracting 3105 from 3720.
Include the next digit (1) from the dividend after 615, then repeat: 6151 / 621

Moving on to step 7:
621 can be fit into 6151 9 times, resulting in a remainder of 562.
Record the quotient 9 as the next digit in the result. 
Result so far: 3859.0
The remainder is 562 after subtracting 5589 from 6151.
Fetch the next digit (9) from the dividend, attach it to 562 and continue: 5629 / 621

Advancing to step 8:
5629 divided by 621 is 9 with a remainder of 40.
Use 9 as the next digit of our solution. 
Result so far: 38599.0
The remainder is 40 after subtracting 5589 from 5629.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 9:
621 can be fit into 400 0 times, resulting in a remainder of 400.
Put 0 as the next digit of the answer. 
Result so far: 38599.0
If we take 0 away from 400, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 10:
621 goes into 4000 6 times with a remainder of 274.
Write down 6 as next digit of the result. 
Result so far: 38599.06
Subtract 3726 from 4000 to get 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Going ahead to step 11:
621 can be fit into 2740 4 times, resulting in a remainder of 256.
Use 4 as the next digit of our solution. 
Result so far: 38599.064
Subtract 2484 from 2740 to get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Going ahead to step 12:
If we divide 2560 by 621, we get 4 and a remainder of 76.
Put 4 as the next digit of the answer. 
Result so far: 38599.0644
Subtracting 2484 from 2560 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

In conclusion, the division gives 38599.0644 with a balance of 0.00076.