201820 ÷ 45 
Our goal is to divide 201820 by 45.

On to step 1:
45 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 45

Going ahead to step 2:
When dividing 20 by 45, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 20 after subtracting 0 from 20.
Fetch the next digit (1) from the dividend, attach it to 20 and continue: 201 / 45

Let's proceed to step 3:
If we divide 201 by 45, we get 4 and a remainder of 21.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 180 from 201 leaves us with 21.
Include the next digit (8) from the dividend after 21, then repeat: 218 / 45

Going ahead to step 4:
45 can be fit into 218 4 times, resulting in a remainder of 38.
Write down 4 as next digit of the result. 
Result so far: 44.0
Deduct 180 from 218 and we're left with 38.
Append the next digit (2) from the dividend to 38 and continue with: 382 / 45

On to step 5:
When dividing 382 by 45, we get 8 with a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 448.0
Subtract 360 from 382 to get 22.
Bring next digit (0) of the dividend behind the 22 and repeat the process: 220 / 45

Step 6:
The number 45 fits into 220 4 times, leaving a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 4484.0
Deduct 180 from 220 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 7:
The number 45 fits into 400 8 times, leaving a remainder of 40.
Put 8 as the next digit of the answer. 
Result so far: 4484.8
Subtract 360 from 400 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 8:
45 can be fit into 400 8 times, resulting in a remainder of 40.
Write down 8 as next digit of the result. 
Result so far: 4484.88
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final outcome is 4484.88, with a leftover of 0.04.