597685 ÷ 90 
We're looking to find how many times 90 goes into 597685.

Step 1:
The number 90 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (9) from the dividend, attach it to 5 and continue: 59 / 90

Step 2:
If we divide 59 by 90, we get 0 and a remainder of 59.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 59 and we're left with 59.
Append the next digit (7) from the dividend to 59 and continue with: 597 / 90

Let's proceed to step 3:
90 can be fit into 597 6 times, resulting in a remainder of 57.
Put 6 as the next digit of the answer. 
Result so far: 6.0
The remainder is 57 after subtracting 540 from 597.
Append the next digit (6) from the dividend to 57 and continue with: 576 / 90

Going ahead to step 4:
90 goes into 576 6 times with a remainder of 36.
Record the quotient 6 as the next digit in the result. 
Result so far: 66.0
The remainder is 36 after subtracting 540 from 576.
Append the next digit (8) from the dividend to 36 and continue with: 368 / 90

Advancing to step 5:
368 divided by 90 is 4 with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 664.0
If we subtract 360 from 368, we get 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 90

Going ahead to step 6:
90 can be fit into 85 0 times, resulting in a remainder of 85.
Record the quotient 0 as the next digit in the result. 
Result so far: 6640.0
Deduct 0 from 85 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Step 7:
90 can be fit into 850 9 times, resulting in a remainder of 40.
The number 9 becomes the next digit in our result. 
Result so far: 6640.9
Deduct 810 from 850 and we're left 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.

Step 8:
90 goes into 400 4 times with a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 6640.94
Subtracting 360 from 400 leaves us 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.

On to step 9:
If we divide 400 by 90, we get 4 and a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 6640.944
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.

The final result is 6640.944 with a remainder of 0.004.