84103 divided by 45 
Let's see how many times 45 fits into 84103.

On to step 1:
8 divided by 45 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 45

Advancing to step 2:
The number 45 fits into 84 1 times, leaving a remainder of 39.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 45 from 84 to get 39.
Include the next digit (1) from the dividend after 39, then repeat: 391 / 45

Let's proceed to step 3:
391 divided by 45 is 8 with a remainder of 31.
Write down 8 as next digit of the result. 
Result so far: 18.0
Subtracting 360 from 391 leaves us with 31.
Fetch the next digit (0) from the dividend, attach it to 31 and continue: 310 / 45

Step 4:
45 goes into 310 6 times with a remainder of 40.
The next digit of our result is 6. 
Result so far: 186.0
Subtracting 270 from 310 leaves us with 40.
Append the next digit (3) from the dividend to 40 and continue with: 403 / 45

Advancing to step 5:
When dividing 403 by 45, we get 8 with a remainder of 43.
The number 8 becomes the next digit in our result. 
Result so far: 1868.0
Deduct 360 from 403 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 6:
When dividing 430 by 45, we get 9 with a remainder of 25.
Write down 9 as next digit of the result. 
Result so far: 1868.9
The remainder is 25 after subtracting 405 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 7:
The number 45 fits into 250 5 times, leaving a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 1868.95
The remainder is 25 after subtracting 225 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 8:
45 can be fit into 250 5 times, resulting in a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 1868.955
Deduct 225 from 250 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

After the division, we end up with 1868.955 and a remainder of 0.0025.