640661 divided by 85 
Let's see how many times 85 fits into 640661.

Moving on to step 1:
85 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 85

Going ahead to step 2:
64 divided by 85 is 0 with a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Grab the next digit (0) from the dividend, add it to 64, then carry on: 640 / 85

Going ahead to step 3:
85 can be fit into 640 7 times, resulting in a remainder of 45.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtracting 595 from 640 leaves us with 45.
Fetch the next digit (6) from the dividend, attach it to 45 and continue: 456 / 85

Step 4:
If we divide 456 by 85, we get 5 and a remainder of 31.
The number 5 becomes the next digit in our result. 
Result so far: 75.0
Subtract 425 from 456 to get 31.
Bring next digit (6) of the dividend behind the 31 and repeat the process: 316 / 85

Advancing to step 5:
When dividing 316 by 85, we get 3 with a remainder of 61.
Use 3 as the next digit of our solution. 
Result so far: 753.0
Subtract 255 from 316 to get 61.
Grab the next digit (1) from the dividend, add it to 61, then carry on: 611 / 85

On to step 6:
611 divided by 85 is 7 with a remainder of 16.
Record the quotient 7 as the next digit in the result. 
Result so far: 7537.0
The remainder is 16 after subtracting 595 from 611.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 7:
160 divided by 85 is 1 with a remainder of 75.
Put 1 as the next digit of the answer. 
Result so far: 7537.1
If we subtract 85 from 160, 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.

Let's proceed to step 8:
If we divide 750 by 85, we get 8 and a remainder of 70.
Write down 8 as next digit of the result. 
Result so far: 7537.18
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.

Going ahead to step 9:
85 goes into 700 8 times with a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 7537.188
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 7537.188 with a remaining 0.002.