We divide 607990 by 90
Let's see how many times 90 fits into 607990.

On to step 1:
90 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 90

Let's proceed to step 2:
The number 90 fits into 60 0 times, leaving a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 60 to get 60.
Bring next digit (7) of the dividend behind the 60 and repeat the process: 607 / 90

Let's proceed to step 3:
607 divided by 90 is 6 with a remainder of 67.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we subtract 540 from 607, we get 67.
Take the next digit (9) from the dividend and append it to 67, then repeat: 679 / 90

Let's proceed to step 4:
The number 90 fits into 679 7 times, leaving a remainder of 49.
The next digit of our result is 7. 
Result so far: 67.0
The remainder is 49 after subtracting 630 from 679.
Include the next digit (9) from the dividend after 49, then repeat: 499 / 90

Let's proceed to step 5:
90 can be fit into 499 5 times, resulting in a remainder of 49.
The next digit of our result is 5. 
Result so far: 675.0
The remainder is 49 after subtracting 450 from 499.
Take the next digit (0) from the dividend and append it to 49, then repeat: 490 / 90

Step 6:
When dividing 490 by 90, we get 5 with a remainder of 40.
Put 5 as the next digit of the answer. 
Result so far: 6755.0
If we take 450 away from 490, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 7:
90 goes into 400 4 times with a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 6755.4
Subtract 360 from 400 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 8:
400 divided by 90 is 4 with a remainder of 40.
The next digit of our result is 4. 
Result so far: 6755.44
The remainder is 40 after subtracting 360 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

In conclusion, the division gives 6755.44 with a balance of 0.04.