We divide 86858009 by 640
We want to divide 86858009 by 640.

Moving on to step 1:
640 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 640

Moving on to step 2:
When dividing 86 by 640, we get 0 with a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Append the next digit (8) from the dividend to 86 and continue with: 868 / 640

Step 3:
When dividing 868 by 640, we get 1 with a remainder of 228.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 228 after subtracting 640 from 868.
Fetch the next digit (5) from the dividend, attach it to 228 and continue: 2285 / 640

On to step 4:
640 can be fit into 2285 3 times, resulting in a remainder of 365.
The next digit of our result is 3. 
Result so far: 13.0
If we take 1920 away from 2285, we end up with 365.
Bring next digit (8) of the dividend behind the 365 and repeat the process: 3658 / 640

Let's proceed to step 5:
640 can be fit into 3658 5 times, resulting in a remainder of 458.
Write down 5 as next digit of the result. 
Result so far: 135.0
The remainder is 458 after subtracting 3200 from 3658.
Include the next digit (0) from the dividend after 458, then repeat: 4580 / 640

On to step 6:
When dividing 4580 by 640, we get 7 with a remainder of 100.
Put 7 as the next digit of the answer. 
Result so far: 1357.0
If we take 4480 away from 4580, we end up with 100.
Append the next digit (0) from the dividend to 100 and continue with: 1000 / 640

On to step 7:
1000 divided by 640 is 1 with a remainder of 360.
Use 1 as the next digit of our solution. 
Result so far: 13571.0
If we take 640 away from 1000, we end up with 360.
Grab the next digit (9) from the dividend, add it to 360, then carry on: 3609 / 640

Let's proceed to step 8:
The number 640 fits into 3609 5 times, leaving a remainder of 409.
Put 5 as the next digit of the answer. 
Result so far: 135715.0
If we subtract 3200 from 3609, we get 409.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4090, and continue the process.

On to step 9:
When dividing 4090 by 640, we get 6 with a remainder of 250.
The next digit of our result is 6. 
Result so far: 135715.6
If we subtract 3840 from 4090, we get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Step 10:
2500 divided by 640 is 3 with a remainder of 580.
Write down 3 as next digit of the result. 
Result so far: 135715.63
Subtracting 1920 from 2500 leaves us with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Advancing to step 11:
640 goes into 5800 9 times with a remainder of 40.
Record the quotient 9 as the next digit in the result. 
Result so far: 135715.639
If we take 5760 away from 5800, we end up 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.

Going ahead to step 12:
If we divide 400 by 640, we get 0 and a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 135715.639
The remainder is 400 after subtracting 0 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 13:
When dividing 4000 by 640, we get 6 with a remainder of 160.
Record the quotient 6 as the next digit in the result. 
Result so far: 135715.63906
Deduct 3840 from 4000 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 14:
If we divide 1600 by 640, we get 2 and a remainder of 320.
Write down 2 as next digit of the result. 
Result so far: 135715.639062
Subtract 1280 from 1600 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Step 15:
If we divide 3200 by 640, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 135715.6390625
Subtract 3200 from 3200 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 16:
0 divided by 640 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 135715.6390625
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.

In conclusion, the division gives 135715.6390625 with a balance of 0.0.