We look at the division of 80217984 by 640 
Let's see how many times 640 fits into 80217984.

Moving on to step 1:
8 divided by 640 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 640

Moving on to step 2:
640 can be fit into 80 0 times, resulting in a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Append the next digit (2) from the dividend to 80 and continue with: 802 / 640

Going ahead to step 3:
640 goes into 802 1 times with a remainder of 162.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 640 away from 802, we end up with 162.
Fetch the next digit (1) from the dividend, attach it to 162 and continue: 1621 / 640

Moving on to step 4:
If we divide 1621 by 640, we get 2 and a remainder of 341.
The next digit of our result is 2. 
Result so far: 12.0
Subtract 1280 from 1621 to get 341.
Grab the next digit (7) from the dividend, add it to 341, then carry on: 3417 / 640

Step 5:
640 goes into 3417 5 times with a remainder of 217.
The next digit of our result is 5. 
Result so far: 125.0
If we subtract 3200 from 3417, we get 217.
Append the next digit (9) from the dividend to 217 and continue with: 2179 / 640

Advancing to step 6:
640 goes into 2179 3 times with a remainder of 259.
The number 3 becomes the next digit in our result. 
Result so far: 1253.0
If we take 1920 away from 2179, we end up with 259.
Append the next digit (8) from the dividend to 259 and continue with: 2598 / 640

On to step 7:
The number 640 fits into 2598 4 times, leaving a remainder of 38.
Put 4 as the next digit of the answer. 
Result so far: 12534.0
Deduct 2560 from 2598 and we're left with 38.
Include the next digit (4) from the dividend after 38, then repeat: 384 / 640

Step 8:
If we divide 384 by 640, we get 0 and a remainder of 384.
The next digit of our result is 0. 
Result so far: 125340.0
If we take 0 away from 384, we end up with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Going ahead to step 9:
3840 divided by 640 is 6 with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 125340.6
Deduct 3840 from 3840 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.

On to step 10:
The number 640 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 125340.6
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.

Advancing to step 11:
640 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 125340.6
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.

After the division, we end up with 125340.6 and a remainder of 0.0.