Let's divide 158858 by 90
We want to figure out the number of times 158858 can be divided by 90.

Advancing to step 1:
90 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 90

Step 2:
If we divide 15 by 90, we get 0 and a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Include the next digit (8) from the dividend after 15, then repeat: 158 / 90

Advancing to step 3:
90 goes into 158 1 times with a remainder of 68.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 90 from 158 and we're left with 68.
Take the next digit (8) from the dividend and append it to 68, then repeat: 688 / 90

On to step 4:
90 can be fit into 688 7 times, resulting in a remainder of 58.
The next digit of our result is 7. 
Result so far: 17.0
If we subtract 630 from 688, we get 58.
Include the next digit (5) from the dividend after 58, then repeat: 585 / 90

Let's proceed to step 5:
90 can be fit into 585 6 times, resulting in a remainder of 45.
Put 6 as the next digit of the answer. 
Result so far: 176.0
Subtract 540 from 585 to get 45.
Take the next digit (8) from the dividend and append it to 45, then repeat: 458 / 90

Step 6:
458 divided by 90 is 5 with a remainder of 8.
Use 5 as the next digit of our solution. 
Result so far: 1765.0
If we subtract 450 from 458, 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.

Step 7:
90 can be fit into 80 0 times, resulting in a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 1765.0
Subtract 0 from 80 to 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.

Step 8:
90 can be fit into 800 8 times, resulting in a remainder of 80.
The number 8 becomes the next digit in our result. 
Result so far: 1765.08
If we take 720 away from 800, we end up 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.

Step 9:
When dividing 800 by 90, we get 8 with a remainder of 80.
Use 8 as the next digit of our solution. 
Result so far: 1765.088
Subtract 720 from 800 to 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 final result is 1765.088 with a remainder of 0.008.