We're dividing 74454243 by 621 
Let's see how many times 621 fits into 74454243.

Going ahead to step 1:
7 divided by 621 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 621

Moving on to step 2:
When dividing 74 by 621, we get 0 with a remainder of 74.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 74, we get 74.
Bring next digit (4) of the dividend behind the 74 and repeat the process: 744 / 621

On to step 3:
The number 621 fits into 744 1 times, leaving a remainder of 123.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 621 from 744, we get 123.
Take the next digit (5) from the dividend and append it to 123, then repeat: 1235 / 621

Going ahead to step 4:
621 can be fit into 1235 1 times, resulting in a remainder of 614.
The next digit of our result is 1. 
Result so far: 11.0
Subtract 621 from 1235 to get 614.
Bring next digit (4) of the dividend behind the 614 and repeat the process: 6144 / 621

Let's proceed to step 5:
621 can be fit into 6144 9 times, resulting in a remainder of 555.
Use 9 as the next digit of our solution. 
Result so far: 119.0
If we subtract 5589 from 6144, we get 555.
Include the next digit (2) from the dividend after 555, then repeat: 5552 / 621

Step 6:
621 goes into 5552 8 times with a remainder of 584.
Record the quotient 8 as the next digit in the result. 
Result so far: 1198.0
Subtracting 4968 from 5552 leaves us with 584.
Take the next digit (4) from the dividend and append it to 584, then repeat: 5844 / 621

Moving on to step 7:
The number 621 fits into 5844 9 times, leaving a remainder of 255.
Use 9 as the next digit of our solution. 
Result so far: 11989.0
Deduct 5589 from 5844 and we're left with 255.
Take the next digit (3) from the dividend and append it to 255, then repeat: 2553 / 621

Step 8:
When dividing 2553 by 621, we get 4 with a remainder of 69.
Write down 4 as next digit of the result. 
Result so far: 119894.0
Subtracting 2484 from 2553 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Let's proceed to step 9:
When dividing 690 by 621, we get 1 with a remainder of 69.
Use 1 as the next digit of our solution. 
Result so far: 119894.1
If we subtract 621 from 690, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

On to step 10:
621 can be fit into 690 1 times, resulting in a remainder of 69.
Record the quotient 1 as the next digit in the result. 
Result so far: 119894.11
Deduct 621 from 690 and we're left with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Our division results in 119894.11 with a remaining 0.069.