We look at the division of 203487 by 45 
We want to divide 203487 by 45.

Step 1:
If we divide 2 by 45, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 45

Going ahead to step 2:
If we divide 20 by 45, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 20 leaves us with 20.
Bring next digit (3) of the dividend behind the 20 and repeat the process: 203 / 45

Advancing to step 3:
203 divided by 45 is 4 with a remainder of 23.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 180 from 203 to get 23.
Append the next digit (4) from the dividend to 23 and continue with: 234 / 45

Going ahead to step 4:
234 divided by 45 is 5 with a remainder of 9.
Write down 5 as next digit of the result. 
Result so far: 45.0
Subtracting 225 from 234 leaves us with 9.
Fetch the next digit (8) from the dividend, attach it to 9 and continue: 98 / 45

Step 5:
When dividing 98 by 45, we get 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 452.0
Subtracting 90 from 98 leaves us with 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 45

Moving on to step 6:
45 can be fit into 87 1 times, resulting in a remainder of 42.
The number 1 becomes the next digit in our result. 
Result so far: 4521.0
If we take 45 away from 87, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 7:
420 divided by 45 is 9 with a remainder of 15.
Record the quotient 9 as the next digit in the result. 
Result so far: 4521.9
If we subtract 405 from 420, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 8:
45 can be fit into 150 3 times, resulting in a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 4521.93
Subtracting 135 from 150 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 9:
If we divide 150 by 45, we get 3 and a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 4521.933
If we take 135 away from 150, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Our division results in 4521.933 with a remaining 0.0015.