We divide 845678 by 90
We're looking to find how many times 90 goes into 845678.

Let's proceed to step 1:
If we divide 8 by 90, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 90

On to step 2:
When dividing 84 by 90, we get 0 with a remainder of 84.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 84, we get 84.
Append the next digit (5) from the dividend to 84 and continue with: 845 / 90

Going ahead to step 3:
90 can be fit into 845 9 times, resulting in a remainder of 35.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Deduct 810 from 845 and we're left with 35.
Include the next digit (6) from the dividend after 35, then repeat: 356 / 90

Going ahead to step 4:
90 can be fit into 356 3 times, resulting in a remainder of 86.
Put 3 as the next digit of the answer. 
Result so far: 93.0
Subtract 270 from 356 to get 86.
Fetch the next digit (7) from the dividend, attach it to 86 and continue: 867 / 90

On to step 5:
If we divide 867 by 90, we get 9 and a remainder of 57.
The number 9 becomes the next digit in our result. 
Result so far: 939.0
If we take 810 away from 867, we end up with 57.
Append the next digit (8) from the dividend to 57 and continue with: 578 / 90

Step 6:
If we divide 578 by 90, we get 6 and a remainder of 38.
Use 6 as the next digit of our solution. 
Result so far: 9396.0
If we take 540 away from 578, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 7:
When dividing 380 by 90, we get 4 with a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 9396.4
If we take 360 away from 380, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 8:
90 goes into 200 2 times with a remainder of 20.
The next digit of our result is 2. 
Result so far: 9396.42
Subtract 180 from 200 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
90 can be fit into 200 2 times, resulting in a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 9396.422
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final result is 9396.422 with a remainder of 0.002.