We're dividing 842840 by 90 
We want to figure out the number of times 842840 can be divided by 90.

Advancing to step 1:
8 divided by 90 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 90

Step 2:
90 can be fit into 84 0 times, resulting in a remainder of 84.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 84 to get 84.
Append the next digit (2) from the dividend to 84 and continue with: 842 / 90

Step 3:
90 goes into 842 9 times with a remainder of 32.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtract 810 from 842 to get 32.
Fetch the next digit (8) from the dividend, attach it to 32 and continue: 328 / 90

Let's proceed to step 4:
When dividing 328 by 90, we get 3 with a remainder of 58.
Put 3 as the next digit of the answer. 
Result so far: 93.0
Deduct 270 from 328 and we're left with 58.
Take the next digit (4) from the dividend and append it to 58, then repeat: 584 / 90

Moving on to step 5:
90 can be fit into 584 6 times, resulting in a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 936.0
If we subtract 540 from 584, we get 44.
Take the next digit (0) from the dividend and append it to 44, then repeat: 440 / 90

Let's proceed to step 6:
90 can be fit into 440 4 times, resulting in a remainder of 80.
Use 4 as the next digit of our solution. 
Result so far: 9364.0
Subtracting 360 from 440 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.

Advancing to step 7:
90 goes into 800 8 times with a remainder of 80.
Record the quotient 8 as the next digit in the result. 
Result so far: 9364.8
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.

On to step 8:
90 goes into 800 8 times with a remainder of 80.
Write down 8 as next digit of the result. 
Result so far: 9364.88
The remainder is 80 after subtracting 720 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

After the division, we end up with 9364.88 and a remainder of 0.08.