We're dividing 11420815 by 621 
We want to figure out the number of times 11420815 can be divided by 621.

Moving on to step 1:
1 divided by 621 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 621

Moving on to step 2:
11 divided by 621 is 0 with a remainder of 11.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 11, we get 11.
Take the next digit (4) from the dividend and append it to 11, then repeat: 114 / 621

On to step 3:
621 can be fit into 114 0 times, resulting in a remainder of 114.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 114 and we're left with 114.
Append the next digit (2) from the dividend to 114 and continue with: 1142 / 621

On to step 4:
621 can be fit into 1142 1 times, resulting in a remainder of 521.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 621 from 1142 to get 521.
Bring next digit (0) of the dividend behind the 521 and repeat the process: 5210 / 621

Going ahead to step 5:
When dividing 5210 by 621, we get 8 with a remainder of 242.
Use 8 as the next digit of our solution. 
Result so far: 18.0
If we take 4968 away from 5210, we end up with 242.
Include the next digit (8) from the dividend after 242, then repeat: 2428 / 621

Moving on to step 6:
2428 divided by 621 is 3 with a remainder of 565.
Record the quotient 3 as the next digit in the result. 
Result so far: 183.0
Subtract 1863 from 2428 to get 565.
Fetch the next digit (1) from the dividend, attach it to 565 and continue: 5651 / 621

On to step 7:
When dividing 5651 by 621, we get 9 with a remainder of 62.
The number 9 becomes the next digit in our result. 
Result so far: 1839.0
The remainder is 62 after subtracting 5589 from 5651.
Take the next digit (5) from the dividend and append it to 62, then repeat: 625 / 621

Advancing to step 8:
If we divide 625 by 621, we get 1 and a remainder of 4.
The next digit of our result is 1. 
Result so far: 18391.0
Subtract 621 from 625 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
When dividing 40 by 621, we get 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 18391.0
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 10:
621 goes into 400 0 times with a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 18391.0
Subtracting 0 from 400 leaves us 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.

In conclusion, the division gives 18391.0 with a balance of 0.4.