We're dividing 818139 by 90 
We want to figure out the number of times 818139 can be divided by 90.

Let's proceed to step 1:
The number 90 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 90

Moving on to step 2:
90 goes into 81 0 times with a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Grab the next digit (8) from the dividend, add it to 81, then carry on: 818 / 90

On to step 3:
If we divide 818 by 90, we get 9 and a remainder of 8.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 810 from 818 to get 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 90

Step 4:
90 goes into 81 0 times with a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 90.0
Subtracting 0 from 81 leaves us with 81.
Bring next digit (3) of the dividend behind the 81 and repeat the process: 813 / 90

On to step 5:
813 divided by 90 is 9 with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 909.0
If we take 810 away from 813, we end up with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 90

Moving on to step 6:
90 can be fit into 39 0 times, resulting in a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 9090.0
If we subtract 0 from 39, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 7:
If we divide 390 by 90, we get 4 and a remainder of 30.
Record the quotient 4 as the next digit in the result. 
Result so far: 9090.4
If we subtract 360 from 390, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 8:
The number 90 fits into 300 3 times, leaving a remainder of 30.
Use 3 as the next digit of our solution. 
Result so far: 9090.43
Subtracting 270 from 300 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 9:
When dividing 300 by 90, we get 3 with a remainder of 30.
Write down 3 as next digit of the result. 
Result so far: 9090.433
If we take 270 away from 300, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

In conclusion, the division gives 9090.433 with a balance of 0.003.