Let's divide 840349 by 90
Our goal is to divide 840349 by 90.

On to step 1:
90 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 90

Going ahead to step 2:
90 goes into 84 0 times with a remainder of 84.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 84 and we're left with 84.
Bring next digit (0) of the dividend behind the 84 and repeat the process: 840 / 90

Advancing to step 3:
The number 90 fits into 840 9 times, leaving a remainder of 30.
The next digit of our result is 9. 
Result so far: 9.0
If we take 810 away from 840, we end up with 30.
Fetch the next digit (3) from the dividend, attach it to 30 and continue: 303 / 90

Moving on to step 4:
303 divided by 90 is 3 with a remainder of 33.
The next digit of our result is 3. 
Result so far: 93.0
If we subtract 270 from 303, we get 33.
Bring next digit (4) of the dividend behind the 33 and repeat the process: 334 / 90

On to step 5:
334 divided by 90 is 3 with a remainder of 64.
Write down 3 as next digit of the result. 
Result so far: 933.0
The remainder is 64 after subtracting 270 from 334.
Append the next digit (9) from the dividend to 64 and continue with: 649 / 90

Step 6:
90 can be fit into 649 7 times, resulting in a remainder of 19.
The number 7 becomes the next digit in our result. 
Result so far: 9337.0
Subtracting 630 from 649 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 7:
190 divided by 90 is 2 with a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 9337.2
Subtracting 180 from 190 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
The number 90 fits into 100 1 times, leaving a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 9337.21
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 9:
If we divide 100 by 90, we get 1 and a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 9337.211
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 9337.211, with a leftover of 0.001.