Let's divide 198972 by 45
Our goal is to divide 198972 by 45.

Advancing to step 1:
If we divide 1 by 45, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 45

Moving on to step 2:
19 divided by 45 is 0 with a remainder of 19.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 19 and we're left with 19.
Append the next digit (8) from the dividend to 19 and continue with: 198 / 45

Advancing to step 3:
45 goes into 198 4 times with a remainder of 18.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 180 from 198 to get 18.
Take the next digit (9) from the dividend and append it to 18, then repeat: 189 / 45

Let's proceed to step 4:
45 goes into 189 4 times with a remainder of 9.
The next digit of our result is 4. 
Result so far: 44.0
If we subtract 180 from 189, we get 9.
Grab the next digit (7) from the dividend, add it to 9, then carry on: 97 / 45

Step 5:
97 divided by 45 is 2 with a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 442.0
Deduct 90 from 97 and we're left with 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 45

Going ahead to step 6:
The number 45 fits into 72 1 times, leaving a remainder of 27.
Use 1 as the next digit of our solution. 
Result so far: 4421.0
If we take 45 away from 72, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 7:
When dividing 270 by 45, we get 6 with a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 4421.6
The remainder is 0 after subtracting 270 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
45 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 4421.6
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
If we divide 0 by 45, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4421.6
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 4421.6 with a remainder of 0.0.