840768 divided by 90 
We want to figure out the number of times 840768 can be divided by 90.

Moving on to step 1:
If we divide 8 by 90, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 90

Advancing to step 2:
The number 90 fits into 84 0 times, leaving a remainder of 84.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 84 and we're left with 84.
Take the next digit (0) from the dividend and append it to 84, then repeat: 840 / 90

Moving on to step 3:
840 divided by 90 is 9 with a remainder of 30.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we take 810 away from 840, we end up with 30.
Fetch the next digit (7) from the dividend, attach it to 30 and continue: 307 / 90

Advancing to step 4:
90 can be fit into 307 3 times, resulting in a remainder of 37.
Write down 3 as next digit of the result. 
Result so far: 93.0
If we subtract 270 from 307, we get 37.
Bring next digit (6) of the dividend behind the 37 and repeat the process: 376 / 90

Step 5:
If we divide 376 by 90, we get 4 and a remainder of 16.
The next digit of our result is 4. 
Result so far: 934.0
Subtracting 360 from 376 leaves us with 16.
Bring next digit (8) of the dividend behind the 16 and repeat the process: 168 / 90

Going ahead to step 6:
168 divided by 90 is 1 with a remainder of 78.
Write down 1 as next digit of the result. 
Result so far: 9341.0
If we take 90 away from 168, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

On to step 7:
90 goes into 780 8 times with a remainder of 60.
Use 8 as the next digit of our solution. 
Result so far: 9341.8
If we take 720 away from 780, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 8:
90 goes into 600 6 times with a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 9341.86
If we subtract 540 from 600, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 9:
90 can be fit into 600 6 times, resulting in a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 9341.866
If we subtract 540 from 600, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final outcome is 9341.866, with a leftover of 0.006.