408623 ÷ 45 
Let's see how many times 45 fits into 408623.

Going ahead to step 1:
45 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 45

Going ahead to step 2:
45 can be fit into 40 0 times, resulting in a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 40 after subtracting 0 from 40.
Append the next digit (8) from the dividend to 40 and continue with: 408 / 45

Advancing to step 3:
408 divided by 45 is 9 with a remainder of 3.
The next digit of our result is 9. 
Result so far: 9.0
The remainder is 3 after subtracting 405 from 408.
Include the next digit (6) from the dividend after 3, then repeat: 36 / 45

Moving on to step 4:
36 divided by 45 is 0 with a remainder of 36.
The number 0 becomes the next digit in our result. 
Result so far: 90.0
Subtracting 0 from 36 leaves us with 36.
Bring next digit (2) of the dividend behind the 36 and repeat the process: 362 / 45

Advancing to step 5:
45 can be fit into 362 8 times, resulting in a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 908.0
Subtract 360 from 362 to get 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 45

Advancing to step 6:
When dividing 23 by 45, we get 0 with a remainder of 23.
Write down 0 as next digit of the result. 
Result so far: 9080.0
If we subtract 0 from 23, we 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.

Step 7:
If we divide 230 by 45, we get 5 and a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 9080.5
If we subtract 225 from 230, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 8:
When dividing 50 by 45, we get 1 with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 9080.51
Deduct 45 from 50 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 9:
45 can be fit into 50 1 times, resulting in a remainder of 5.
The next digit of our result is 1. 
Result so far: 9080.511
Deduct 45 from 50 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 9080.511, with a leftover of 0.0005.