We look at the division of 21592994 by 623 
We want to divide 21592994 by 623.

Going ahead to step 1:
2 divided by 623 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 623

Advancing to step 2:
When dividing 21 by 623, we get 0 with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 623

Moving on to step 3:
623 goes into 215 0 times with a remainder of 215.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 215, we get 215.
Take the next digit (9) from the dividend and append it to 215, then repeat: 2159 / 623

Step 4:
If we divide 2159 by 623, we get 3 and a remainder of 290.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 290 after subtracting 1869 from 2159.
Take the next digit (2) from the dividend and append it to 290, then repeat: 2902 / 623

Let's proceed to step 5:
623 can be fit into 2902 4 times, resulting in a remainder of 410.
Put 4 as the next digit of the answer. 
Result so far: 34.0
If we subtract 2492 from 2902, we get 410.
Append the next digit (9) from the dividend to 410 and continue with: 4109 / 623

Advancing to step 6:
623 can be fit into 4109 6 times, resulting in a remainder of 371.
The next digit of our result is 6. 
Result so far: 346.0
The remainder is 371 after subtracting 3738 from 4109.
Fetch the next digit (9) from the dividend, attach it to 371 and continue: 3719 / 623

Step 7:
When dividing 3719 by 623, we get 5 with a remainder of 604.
Use 5 as the next digit of our solution. 
Result so far: 3465.0
If we take 3115 away from 3719, we end up with 604.
Bring next digit (4) of the dividend behind the 604 and repeat the process: 6044 / 623

Step 8:
When dividing 6044 by 623, we get 9 with a remainder of 437.
Write down 9 as next digit of the result. 
Result so far: 34659.0
Deduct 5607 from 6044 and we're left with 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

Let's proceed to step 9:
4370 divided by 623 is 7 with a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 34659.7
Deduct 4361 from 4370 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 10:
The number 623 fits into 90 0 times, leaving a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 34659.7
Deduct 0 from 90 and we're left with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 11:
900 divided by 623 is 1 with a remainder of 277.
Record the quotient 1 as the next digit in the result. 
Result so far: 34659.701
If we subtract 623 from 900, we get 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 12:
623 goes into 2770 4 times with a remainder of 278.
The next digit of our result is 4. 
Result so far: 34659.7014
The remainder is 278 after subtracting 2492 from 2770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

On to step 13:
The number 623 fits into 2780 4 times, leaving a remainder of 288.
The next digit of our result is 4. 
Result so far: 34659.70144
Deduct 2492 from 2780 and we're left with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

The final result is 34659.70144 with a remainder of 0.000288.