86936304 divided by 640 
Let's see how many times 640 fits into 86936304.

On to step 1:
640 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 640

Let's proceed to step 2:
86 divided by 640 is 0 with a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Take the next digit (9) from the dividend and append it to 86, then repeat: 869 / 640

Moving on to step 3:
If we divide 869 by 640, we get 1 and a remainder of 229.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 640 from 869 and we're left with 229.
Bring next digit (3) of the dividend behind the 229 and repeat the process: 2293 / 640

Advancing to step 4:
If we divide 2293 by 640, we get 3 and a remainder of 373.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we take 1920 away from 2293, we end up with 373.
Grab the next digit (6) from the dividend, add it to 373, then carry on: 3736 / 640

Moving on to step 5:
3736 divided by 640 is 5 with a remainder of 536.
Use 5 as the next digit of our solution. 
Result so far: 135.0
The remainder is 536 after subtracting 3200 from 3736.
Append the next digit (3) from the dividend to 536 and continue with: 5363 / 640

Step 6:
If we divide 5363 by 640, we get 8 and a remainder of 243.
Record the quotient 8 as the next digit in the result. 
Result so far: 1358.0
Deduct 5120 from 5363 and we're left with 243.
Bring next digit (0) of the dividend behind the 243 and repeat the process: 2430 / 640

On to step 7:
When dividing 2430 by 640, we get 3 with a remainder of 510.
Use 3 as the next digit of our solution. 
Result so far: 13583.0
If we subtract 1920 from 2430, we get 510.
Include the next digit (4) from the dividend after 510, then repeat: 5104 / 640

Advancing to step 8:
5104 divided by 640 is 7 with a remainder of 624.
The number 7 becomes the next digit in our result. 
Result so far: 135837.0
If we take 4480 away from 5104, we end up with 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

Going ahead to step 9:
If we divide 6240 by 640, we get 9 and a remainder of 480.
Use 9 as the next digit of our solution. 
Result so far: 135837.9
If we take 5760 away from 6240, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 10:
When dividing 4800 by 640, we get 7 with a remainder of 320.
The number 7 becomes the next digit in our result. 
Result so far: 135837.97
If we take 4480 away from 4800, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 11:
3200 divided by 640 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 135837.975
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.

Moving on to step 12:
The number 640 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 135837.975
If we take 0 away from 0, 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.

Step 13:
640 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 135837.975
The remainder is 0 after subtracting 0 from 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 result is 135837.975 with a remainder of 0.0.