Let's divide 640285 by 10
Let's see how many times 10 fits into 640285.

Going ahead to step 1:
10 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
Deduct 0 from 6 and we're left with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 10

Let's proceed to step 2:
When dividing 64 by 10, we get 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 6.0
Subtract 60 from 64 to get 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 10

Step 3:
When dividing 40 by 10, we get 4 with a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 64.0
Subtract 40 from 40 to get 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 10

Advancing to step 4:
2 divided by 10 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 640.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 10

Going ahead to step 5:
When dividing 28 by 10, we get 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 6402.0
Subtracting 20 from 28 leaves us with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 10

Step 6:
85 divided by 10 is 8 with a remainder of 5.
Record the quotient 8 as the next digit in the result. 
Result so far: 64028.0
Subtract 80 from 85 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
10 goes into 50 5 times with a remainder of 0.
The next digit of our result is 5. 
Result so far: 64028.5
If we take 50 away from 50, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
When dividing 0 by 10, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 64028.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
If we divide 0 by 10, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 64028.5
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 64028.5, with a leftover of 0.0.