58558 ÷ 90 
We want to figure out the number of times 58558 can be divided by 90.

Step 1:
90 can be fit into 5 0 times, resulting in a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 90

Let's proceed to step 2:
90 goes into 58 0 times with a remainder of 58.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 58, we get 58.
Append the next digit (5) from the dividend to 58 and continue with: 585 / 90

Moving on to step 3:
585 divided by 90 is 6 with a remainder of 45.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 45 after subtracting 540 from 585.
Take the next digit (5) from the dividend and append it to 45, then repeat: 455 / 90

Moving on to step 4:
If we divide 455 by 90, we get 5 and a remainder of 5.
The next digit of our result is 5. 
Result so far: 65.0
The remainder is 5 after subtracting 450 from 455.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 90

On to step 5:
The number 90 fits into 58 0 times, leaving a remainder of 58.
Put 0 as the next digit of the answer. 
Result so far: 650.0
If we take 0 away from 58, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 6:
580 divided by 90 is 6 with a remainder of 40.
Record the quotient 6 as the next digit in the result. 
Result so far: 650.6
Subtract 540 from 580 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 7:
When dividing 400 by 90, we get 4 with a remainder of 40.
Write down 4 as next digit of the result. 
Result so far: 650.64
The remainder is 40 after subtracting 360 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 8:
400 divided by 90 is 4 with a remainder of 40.
Write down 4 as next digit of the result. 
Result so far: 650.644
Deduct 360 from 400 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

After the division, we end up with 650.644 and a remainder of 0.004.