We look at the division of 18445586 by 621 
We want to divide 18445586 by 621.

Moving on to step 1:
When dividing 1 by 621, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 621

On to step 2:
18 divided by 621 is 0 with a remainder of 18.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 18 leaves us with 18.
Grab the next digit (4) from the dividend, add it to 18, then carry on: 184 / 621

Moving on to step 3:
621 can be fit into 184 0 times, resulting in a remainder of 184.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 184 after subtracting 0 from 184.
Take the next digit (4) from the dividend and append it to 184, then repeat: 1844 / 621

Step 4:
621 can be fit into 1844 2 times, resulting in a remainder of 602.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 1242 from 1844 leaves us with 602.
Fetch the next digit (5) from the dividend, attach it to 602 and continue: 6025 / 621

Moving on to step 5:
If we divide 6025 by 621, we get 9 and a remainder of 436.
Use 9 as the next digit of our solution. 
Result so far: 29.0
Subtract 5589 from 6025 to get 436.
Include the next digit (5) from the dividend after 436, then repeat: 4365 / 621

Moving on to step 6:
621 goes into 4365 7 times with a remainder of 18.
Record the quotient 7 as the next digit in the result. 
Result so far: 297.0
Subtracting 4347 from 4365 leaves us with 18.
Take the next digit (8) from the dividend and append it to 18, then repeat: 188 / 621

Advancing to step 7:
621 goes into 188 0 times with a remainder of 188.
Record the quotient 0 as the next digit in the result. 
Result so far: 2970.0
Subtract 0 from 188 to get 188.
Bring next digit (6) of the dividend behind the 188 and repeat the process: 1886 / 621

Advancing to step 8:
When dividing 1886 by 621, we get 3 with a remainder of 23.
The number 3 becomes the next digit in our result. 
Result so far: 29703.0
Subtracting 1863 from 1886 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 9:
621 can be fit into 230 0 times, resulting in a remainder of 230.
The next digit of our result is 0. 
Result so far: 29703.0
If we subtract 0 from 230, we get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

On to step 10:
621 goes into 2300 3 times with a remainder of 437.
Put 3 as the next digit of the answer. 
Result so far: 29703.03
If we subtract 1863 from 2300, we get 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

On to step 11:
621 goes into 4370 7 times with a remainder of 23.
Record the quotient 7 as the next digit in the result. 
Result so far: 29703.037
If we take 4347 away from 4370, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 12:
230 divided by 621 is 0 with a remainder of 230.
Write down 0 as next digit of the result. 
Result so far: 29703.037
The remainder is 230 after subtracting 0 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

On to step 13:
When dividing 2300 by 621, we get 3 with a remainder of 437.
Put 3 as the next digit of the answer. 
Result so far: 29703.03703
The remainder is 437 after subtracting 1863 from 2300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

Going ahead to step 14:
When dividing 4370 by 621, we get 7 with a remainder of 23.
Use 7 as the next digit of our solution. 
Result so far: 29703.037037
Subtract 4347 from 4370 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 15:
The number 621 fits into 230 0 times, leaving a remainder of 230.
The next digit of our result is 0. 
Result so far: 29703.037037
Subtracting 0 from 230 leaves us with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Going ahead to step 16:
The number 621 fits into 2300 3 times, leaving a remainder of 437.
Put 3 as the next digit of the answer. 
Result so far: 29703.03703703
Subtract 1863 from 2300 to get 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

The final result is 29703.03703703 with a remainder of 4.37e-07.