443909 ÷ 45 
Our goal is to divide 443909 by 45.

Advancing to step 1:
45 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (4) from the dividend after 4, then repeat: 44 / 45

Let's proceed to step 2:
If we divide 44 by 45, we get 0 and a remainder of 44.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 44, we get 44.
Take the next digit (3) from the dividend and append it to 44, then repeat: 443 / 45

On to step 3:
45 goes into 443 9 times with a remainder of 38.
The next digit of our result is 9. 
Result so far: 9.0
Subtracting 405 from 443 leaves us with 38.
Include the next digit (9) from the dividend after 38, then repeat: 389 / 45

On to step 4:
389 divided by 45 is 8 with a remainder of 29.
Write down 8 as next digit of the result. 
Result so far: 98.0
If we take 360 away from 389, we end up with 29.
Include the next digit (0) from the dividend after 29, then repeat: 290 / 45

Let's proceed to step 5:
45 can be fit into 290 6 times, resulting in a remainder of 20.
The next digit of our result is 6. 
Result so far: 986.0
If we subtract 270 from 290, we get 20.
Take the next digit (9) from the dividend and append it to 20, then repeat: 209 / 45

Advancing to step 6:
209 divided by 45 is 4 with a remainder of 29.
The number 4 becomes the next digit in our result. 
Result so far: 9864.0
The remainder is 29 after subtracting 180 from 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 7:
45 goes into 290 6 times with a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 9864.6
If we subtract 270 from 290, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 8:
If we divide 200 by 45, we get 4 and a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 9864.64
If we take 180 away from 200, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
45 can be fit into 200 4 times, resulting in a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 9864.644
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 9864.644 with a remaining 0.002.