We look at the division of 87658359 by 640 
We're looking to find how many times 640 goes into 87658359.

Moving on to step 1:
8 divided by 640 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 640

On to step 2:
When dividing 87 by 640, we get 0 with a remainder of 87.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 87 after subtracting 0 from 87.
Include the next digit (6) from the dividend after 87, then repeat: 876 / 640

Moving on to step 3:
876 divided by 640 is 1 with a remainder of 236.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 640 from 876, we get 236.
Include the next digit (5) from the dividend after 236, then repeat: 2365 / 640

Advancing to step 4:
If we divide 2365 by 640, we get 3 and a remainder of 445.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we take 1920 away from 2365, we end up with 445.
Fetch the next digit (8) from the dividend, attach it to 445 and continue: 4458 / 640

Moving on to step 5:
The number 640 fits into 4458 6 times, leaving a remainder of 618.
Use 6 as the next digit of our solution. 
Result so far: 136.0
Subtracting 3840 from 4458 leaves us with 618.
Grab the next digit (3) from the dividend, add it to 618, then carry on: 6183 / 640

Let's proceed to step 6:
640 goes into 6183 9 times with a remainder of 423.
The next digit of our result is 9. 
Result so far: 1369.0
Subtract 5760 from 6183 to get 423.
Fetch the next digit (5) from the dividend, attach it to 423 and continue: 4235 / 640

Going ahead to step 7:
When dividing 4235 by 640, we get 6 with a remainder of 395.
Use 6 as the next digit of our solution. 
Result so far: 13696.0
Subtract 3840 from 4235 to get 395.
Bring next digit (9) of the dividend behind the 395 and repeat the process: 3959 / 640

Advancing to step 8:
When dividing 3959 by 640, we get 6 with a remainder of 119.
Use 6 as the next digit of our solution. 
Result so far: 136966.0
The remainder is 119 after subtracting 3840 from 3959.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Let's proceed to step 9:
If we divide 1190 by 640, we get 1 and a remainder of 550.
Put 1 as the next digit of the answer. 
Result so far: 136966.1
The remainder is 550 after subtracting 640 from 1190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Moving on to step 10:
When dividing 5500 by 640, we get 8 with a remainder of 380.
The next digit of our result is 8. 
Result so far: 136966.18
Deduct 5120 from 5500 and we're left with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

On to step 11:
640 can be fit into 3800 5 times, resulting in a remainder of 600.
Write down 5 as next digit of the result. 
Result so far: 136966.185
If we take 3200 away from 3800, we end up with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Step 12:
If we divide 6000 by 640, we get 9 and a remainder of 240.
Record the quotient 9 as the next digit in the result. 
Result so far: 136966.1859
Subtracting 5760 from 6000 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 13:
When dividing 2400 by 640, we get 3 with a remainder of 480.
The number 3 becomes the next digit in our result. 
Result so far: 136966.18593
Subtract 1920 from 2400 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 14:
640 can be fit into 4800 7 times, resulting in a remainder of 320.
Use 7 as the next digit of our solution. 
Result so far: 136966.185937
The remainder is 320 after subtracting 4480 from 4800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 15:
3200 divided by 640 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 136966.1859375
The remainder is 0 after subtracting 3200 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 16:
640 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 136966.1859375
Subtract 0 from 0 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.

Our division results in 136966.1859375 with a remaining 0.0.