We're dividing 602915 by 90 
We're looking to find how many times 90 goes into 602915.

On to step 1:
6 divided by 90 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (0) from the dividend after 6, then repeat: 60 / 90

Going ahead to step 2:
The number 90 fits into 60 0 times, leaving a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 60, we get 60.
Include the next digit (2) from the dividend after 60, then repeat: 602 / 90

Let's proceed to step 3:
When dividing 602 by 90, we get 6 with a remainder of 62.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we subtract 540 from 602, we get 62.
Append the next digit (9) from the dividend to 62 and continue with: 629 / 90

Advancing to step 4:
629 divided by 90 is 6 with a remainder of 89.
The number 6 becomes the next digit in our result. 
Result so far: 66.0
Deduct 540 from 629 and we're left with 89.
Append the next digit (1) from the dividend to 89 and continue with: 891 / 90

Step 5:
If we divide 891 by 90, we get 9 and a remainder of 81.
Record the quotient 9 as the next digit in the result. 
Result so far: 669.0
The remainder is 81 after subtracting 810 from 891.
Bring next digit (5) of the dividend behind the 81 and repeat the process: 815 / 90

On to step 6:
90 can be fit into 815 9 times, resulting in a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 6699.0
The remainder is 5 after subtracting 810 from 815.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
When dividing 50 by 90, we get 0 with a remainder of 50.
The next digit of our result is 0. 
Result so far: 6699.0
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 8:
500 divided by 90 is 5 with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 6699.05
Deduct 450 from 500 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 9:
The number 90 fits into 500 5 times, leaving a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 6699.055
Subtract 450 from 500 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 6699.055, with a leftover of 0.005.