We divide 403005 by 90
Our goal is to divide 403005 by 90.

Step 1:
The number 90 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 90

Advancing to step 2:
If we divide 40 by 90, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Take the next digit (3) from the dividend and append it to 40, then repeat: 403 / 90

Let's proceed to step 3:
90 goes into 403 4 times with a remainder of 43.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 43 after subtracting 360 from 403.
Bring next digit (0) of the dividend behind the 43 and repeat the process: 430 / 90

Going ahead to step 4:
90 goes into 430 4 times with a remainder of 70.
Use 4 as the next digit of our solution. 
Result so far: 44.0
Subtracting 360 from 430 leaves us with 70.
Grab the next digit (0) from the dividend, add it to 70, then carry on: 700 / 90

Moving on to step 5:
700 divided by 90 is 7 with a remainder of 70.
The next digit of our result is 7. 
Result so far: 447.0
Deduct 630 from 700 and we're left with 70.
Append the next digit (5) from the dividend to 70 and continue with: 705 / 90

Going ahead to step 6:
When dividing 705 by 90, we get 7 with a remainder of 75.
Use 7 as the next digit of our solution. 
Result so far: 4477.0
Deduct 630 from 705 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 7:
The number 90 fits into 750 8 times, leaving a remainder of 30.
Write down 8 as next digit of the result. 
Result so far: 4477.8
If we take 720 away from 750, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 8:
90 goes into 300 3 times with a remainder of 30.
Record the quotient 3 as the next digit in the result. 
Result so far: 4477.83
Subtracting 270 from 300 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 9:
When dividing 300 by 90, we get 3 with a remainder of 30.
The number 3 becomes the next digit in our result. 
Result so far: 4477.833
If we subtract 270 from 300, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The final outcome is 4477.833, with a leftover of 0.003.