399628 divided by 45 
We're looking to find how many times 45 goes into 399628.

Advancing to step 1:
45 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 45

Step 2:
When dividing 39 by 45, we get 0 with a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Fetch the next digit (9) from the dividend, attach it to 39 and continue: 399 / 45

Going ahead to step 3:
45 can be fit into 399 8 times, resulting in a remainder of 39.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Deduct 360 from 399 and we're left with 39.
Append the next digit (6) from the dividend to 39 and continue with: 396 / 45

Let's proceed to step 4:
The number 45 fits into 396 8 times, leaving a remainder of 36.
Write down 8 as next digit of the result. 
Result so far: 88.0
Deduct 360 from 396 and we're left with 36.
Bring next digit (2) of the dividend behind the 36 and repeat the process: 362 / 45

Step 5:
The number 45 fits into 362 8 times, leaving a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 888.0
Subtract 360 from 362 to get 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 45

Going ahead to step 6:
45 goes into 28 0 times with a remainder of 28.
Write down 0 as next digit of the result. 
Result so far: 8880.0
Subtract 0 from 28 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 7:
45 can be fit into 280 6 times, resulting in a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 8880.6
The remainder is 10 after subtracting 270 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
45 goes into 100 2 times with a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 8880.62
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 9:
If we divide 100 by 45, we get 2 and a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 8880.622
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 8880.622 and a remainder of 0.001.