613803 ÷ 90 
Our goal is to divide 613803 by 90.

Let's proceed to step 1:
When dividing 6 by 90, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 90

Advancing to step 2:
The number 90 fits into 61 0 times, leaving a remainder of 61.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 61, we end up with 61.
Append the next digit (3) from the dividend to 61 and continue with: 613 / 90

Advancing to step 3:
When dividing 613 by 90, we get 6 with a remainder of 73.
The next digit of our result is 6. 
Result so far: 6.0
Subtract 540 from 613 to get 73.
Append the next digit (8) from the dividend to 73 and continue with: 738 / 90

Let's proceed to step 4:
738 divided by 90 is 8 with a remainder of 18.
Write down 8 as next digit of the result. 
Result so far: 68.0
Subtracting 720 from 738 leaves us with 18.
Grab the next digit (0) from the dividend, add it to 18, then carry on: 180 / 90

Step 5:
If we divide 180 by 90, we get 2 and a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 682.0
Deduct 180 from 180 and we're left with 0.
Append the next digit (3) from the dividend to 0 and continue with: 3 / 90

Moving on to step 6:
When dividing 3 by 90, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 6820.0
The remainder is 3 after subtracting 0 from 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
30 divided by 90 is 0 with a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 6820.0
If we subtract 0 from 30, 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.

Step 8:
If we divide 300 by 90, we get 3 and a remainder of 30.
The next digit of our result is 3. 
Result so far: 6820.03
Subtract 270 from 300 to 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.

Advancing to step 9:
90 can be fit into 300 3 times, resulting in a remainder of 30.
Write down 3 as next digit of the result. 
Result so far: 6820.033
The remainder is 30 after subtracting 270 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Our division results in 6820.033 with a remaining 0.003.