590406 ÷ 90 
Our goal is to divide 590406 by 90.

Moving on to step 1:
The number 90 fits into 5 0 times, leaving a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 90

On to step 2:
If we divide 59 by 90, we get 0 and a remainder of 59.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 59 leaves us with 59.
Append the next digit (0) from the dividend to 59 and continue with: 590 / 90

Step 3:
590 divided by 90 is 6 with a remainder of 50.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
The remainder is 50 after subtracting 540 from 590.
Include the next digit (4) from the dividend after 50, then repeat: 504 / 90

Let's proceed to step 4:
90 goes into 504 5 times with a remainder of 54.
Use 5 as the next digit of our solution. 
Result so far: 65.0
If we subtract 450 from 504, we get 54.
Grab the next digit (0) from the dividend, add it to 54, then carry on: 540 / 90

Let's proceed to step 5:
If we divide 540 by 90, we get 6 and a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 656.0
If we take 540 away from 540, we end up with 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 90

On to step 6:
6 divided by 90 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 6560.0
Deduct 0 from 6 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 7:
When dividing 60 by 90, we get 0 with a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 6560.0
If we take 0 away from 60, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 8:
The number 90 fits into 600 6 times, leaving a remainder of 60.
The next digit of our result is 6. 
Result so far: 6560.06
The remainder is 60 after subtracting 540 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 9:
600 divided by 90 is 6 with a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 6560.066
The remainder is 60 after subtracting 540 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final outcome is 6560.066, with a leftover of 0.006.