We're dividing 717891 by 8 
We want to figure out the number of times 717891 can be divided by 8.

Advancing to step 1:
The number 8 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 8

Advancing to step 2:
If we divide 71 by 8, we get 8 and a remainder of 7.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 64 from 71 and we're left with 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 8

Going ahead to step 3:
When dividing 77 by 8, we get 9 with a remainder of 5.
Use 9 as the next digit of our solution. 
Result so far: 89.0
Deduct 72 from 77 and we're left with 5.
Bring next digit (8) of the dividend behind the 5 and repeat the process: 58 / 8

Let's proceed to step 4:
58 divided by 8 is 7 with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 897.0
If we take 56 away from 58, we end up with 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 8

Moving on to step 5:
8 can be fit into 29 3 times, resulting in a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 8973.0
The remainder is 5 after subtracting 24 from 29.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 8

Moving on to step 6:
The number 8 fits into 51 6 times, leaving a remainder of 3.
Write down 6 as next digit of the result. 
Result so far: 89736.0
Subtract 48 from 51 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
30 divided by 8 is 3 with a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 89736.3
Deduct 24 from 30 and we're left with 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 8:
The number 8 fits into 60 7 times, leaving a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 89736.37
Subtracting 56 from 60 leaves us 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.

Step 9:
8 goes into 40 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 89736.375
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.

Moving on to step 10:
8 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 89736.375
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.

Going ahead to step 11:
0 divided by 8 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 89736.375
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.

The final result is 89736.375 with a remainder of 0.0.