We divide 258578 by 90
We want to figure out the number of times 258578 can be divided by 90.

Let's proceed to step 1:
When dividing 2 by 90, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 90

On to step 2:
If we divide 25 by 90, we get 0 and a remainder of 25.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Grab the next digit (8) from the dividend, add it to 25, then carry on: 258 / 90

Advancing to step 3:
90 can be fit into 258 2 times, resulting in a remainder of 78.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 180 from 258 leaves us with 78.
Append the next digit (5) from the dividend to 78 and continue with: 785 / 90

Advancing to step 4:
90 goes into 785 8 times with a remainder of 65.
Use 8 as the next digit of our solution. 
Result so far: 28.0
Subtract 720 from 785 to get 65.
Bring next digit (7) of the dividend behind the 65 and repeat the process: 657 / 90

Moving on to step 5:
90 can be fit into 657 7 times, resulting in a remainder of 27.
The next digit of our result is 7. 
Result so far: 287.0
If we subtract 630 from 657, we get 27.
Fetch the next digit (8) from the dividend, attach it to 27 and continue: 278 / 90

Moving on to step 6:
90 can be fit into 278 3 times, resulting in a remainder of 8.
The number 3 becomes the next digit in our result. 
Result so far: 2873.0
If we subtract 270 from 278, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
80 divided by 90 is 0 with a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 2873.0
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 8:
90 goes into 800 8 times with a remainder of 80.
The next digit of our result is 8. 
Result so far: 2873.08
Subtracting 720 from 800 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 9:
90 can be fit into 800 8 times, resulting in a remainder of 80.
The next digit of our result is 8. 
Result so far: 2873.088
If we subtract 720 from 800, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The quotient of the division is 2873.088, and the remainder is 0.008.