We're dividing 645518 by 8 
Our goal is to divide 645518 by 8.

Let's proceed to step 1:
If we divide 6 by 8, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 8

Advancing to step 2:
8 goes into 64 8 times with a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 8.0
The remainder is 0 after subtracting 64 from 64.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 8

Let's proceed to step 3:
8 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 80.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 8

Moving on to step 4:
8 can be fit into 55 6 times, resulting in a remainder of 7.
The number 6 becomes the next digit in our result. 
Result so far: 806.0
Subtracting 48 from 55 leaves us with 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 8

On to step 5:
8 goes into 71 8 times with a remainder of 7.
Write down 8 as next digit of the result. 
Result so far: 8068.0
Subtract 64 from 71 to get 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 8

Moving on to step 6:
When dividing 78 by 8, we get 9 with a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 80689.0
If we subtract 72 from 78, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 7:
8 goes into 60 7 times with a remainder of 4.
The next digit of our result is 7. 
Result so far: 80689.7
If we take 56 away from 60, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 8:
8 goes into 40 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 80689.75
If we take 40 away from 40, 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.

Let's proceed to step 9:
8 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 80689.75
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 10:
8 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 80689.75
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 result is 80689.75 with a remainder of 0.0.