We divide 40643395 by 45
We want to divide 40643395 by 45.

Moving on to step 1:
45 can be fit into 4 0 times, resulting in a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 45

Moving on to step 2:
40 divided by 45 is 0 with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 40 and we're left with 40.
Include the next digit (6) from the dividend after 40, then repeat: 406 / 45

Advancing to step 3:
When dividing 406 by 45, we get 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 405 from 406 to get 1.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 45

Advancing to step 4:
The number 45 fits into 14 0 times, leaving a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 90.0
If we subtract 0 from 14, we get 14.
Include the next digit (3) from the dividend after 14, then repeat: 143 / 45

Let's proceed to step 5:
45 goes into 143 3 times with a remainder of 8.
The number 3 becomes the next digit in our result. 
Result so far: 903.0
Subtract 135 from 143 to get 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 45

On to step 6:
45 goes into 83 1 times with a remainder of 38.
The number 1 becomes the next digit in our result. 
Result so far: 9031.0
If we subtract 45 from 83, we get 38.
Include the next digit (9) from the dividend after 38, then repeat: 389 / 45

Step 7:
When dividing 389 by 45, we get 8 with a remainder of 29.
Use 8 as the next digit of our solution. 
Result so far: 90318.0
Subtract 360 from 389 to get 29.
Take the next digit (5) from the dividend and append it to 29, then repeat: 295 / 45

Going ahead to step 8:
45 goes into 295 6 times with a remainder of 25.
The number 6 becomes the next digit in our result. 
Result so far: 903186.0
Subtracting 270 from 295 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 9:
45 can be fit into 250 5 times, resulting in a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 903186.5
Deduct 225 from 250 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 10:
250 divided by 45 is 5 with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 903186.55
Deduct 225 from 250 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final outcome is 903186.55, with a leftover of 0.025.