664603 divided by 85 
We want to divide 664603 by 85.

Let's proceed to step 1:
When dividing 6 by 85, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 85

On to step 2:
If we divide 66 by 85, we get 0 and a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Append the next digit (4) from the dividend to 66 and continue with: 664 / 85

Going ahead to step 3:
85 goes into 664 7 times with a remainder of 69.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 595 from 664, we get 69.
Bring next digit (6) of the dividend behind the 69 and repeat the process: 696 / 85

Advancing to step 4:
696 divided by 85 is 8 with a remainder of 16.
The next digit of our result is 8. 
Result so far: 78.0
The remainder is 16 after subtracting 680 from 696.
Grab the next digit (0) from the dividend, add it to 16, then carry on: 160 / 85

On to step 5:
160 divided by 85 is 1 with a remainder of 75.
The number 1 becomes the next digit in our result. 
Result so far: 781.0
If we subtract 85 from 160, we get 75.
Append the next digit (3) from the dividend to 75 and continue with: 753 / 85

Moving on to step 6:
If we divide 753 by 85, we get 8 and a remainder of 73.
The next digit of our result is 8. 
Result so far: 7818.0
Deduct 680 from 753 and we're left with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Let's proceed to step 7:
730 divided by 85 is 8 with a remainder of 50.
The number 8 becomes the next digit in our result. 
Result so far: 7818.8
The remainder is 50 after subtracting 680 from 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 8:
500 divided by 85 is 5 with a remainder of 75.
The next digit of our result is 5. 
Result so far: 7818.85
If we subtract 425 from 500, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 9:
When dividing 750 by 85, we get 8 with a remainder of 70.
Write down 8 as next digit of the result. 
Result so far: 7818.858
If we take 680 away from 750, 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.

On to step 10:
85 goes into 700 8 times with a remainder of 20.
Put 8 as the next digit of the answer. 
Result so far: 7818.8588
If we take 680 away from 700, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 7818.8588 with a remaining 0.0002.