We look at the division of 30285790 by 90 
We want to divide 30285790 by 90.

Let's proceed to step 1:
When dividing 3 by 90, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 90

On to step 2:
90 can be fit into 30 0 times, resulting in a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 30, we get 30.
Grab the next digit (2) from the dividend, add it to 30, then carry on: 302 / 90

On to step 3:
90 goes into 302 3 times with a remainder of 32.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 270 from 302 and we're left with 32.
Fetch the next digit (8) from the dividend, attach it to 32 and continue: 328 / 90

Step 4:
If we divide 328 by 90, we get 3 and a remainder of 58.
Use 3 as the next digit of our solution. 
Result so far: 33.0
Subtract 270 from 328 to get 58.
Append the next digit (5) from the dividend to 58 and continue with: 585 / 90

Going ahead to step 5:
When dividing 585 by 90, we get 6 with a remainder of 45.
The next digit of our result is 6. 
Result so far: 336.0
The remainder is 45 after subtracting 540 from 585.
Include the next digit (7) from the dividend after 45, then repeat: 457 / 90

On to step 6:
90 goes into 457 5 times with a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 3365.0
If we subtract 450 from 457, we get 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 90

Going ahead to step 7:
The number 90 fits into 79 0 times, leaving a remainder of 79.
Use 0 as the next digit of our solution. 
Result so far: 33650.0
If we subtract 0 from 79, we get 79.
Append the next digit (0) from the dividend to 79 and continue with: 790 / 90

Step 8:
90 can be fit into 790 8 times, resulting in a remainder of 70.
Use 8 as the next digit of our solution. 
Result so far: 336508.0
The remainder is 70 after subtracting 720 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 9:
90 can be fit into 700 7 times, resulting in a remainder of 70.
Put 7 as the next digit of the answer. 
Result so far: 336508.7
The remainder is 70 after subtracting 630 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 10:
90 can be fit into 700 7 times, resulting in a remainder of 70.
Record the quotient 7 as the next digit in the result. 
Result so far: 336508.77
If we take 630 away from 700, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

In conclusion, the division gives 336508.77 with a balance of 0.07.