720991 ÷ 8 
We want to divide 720991 by 8.

Step 1:
7 divided by 8 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 8

Moving on to step 2:
When dividing 72 by 8, we get 9 with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 9.0
The remainder is 0 after subtracting 72 from 72.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 8

Advancing to step 3:
If we divide 0 by 8, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 90.0
The remainder is 0 after subtracting 0 from 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 8

Going ahead to step 4:
The number 8 fits into 9 1 times, leaving a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 901.0
Subtracting 8 from 9 leaves us with 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 8

Let's proceed to step 5:
8 can be fit into 19 2 times, resulting in a remainder of 3.
The next digit of our result is 2. 
Result so far: 9012.0
If we take 16 away from 19, we end up with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 8

Moving on to step 6:
8 goes into 31 3 times with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 90123.0
If we subtract 24 from 31, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
70 divided by 8 is 8 with a remainder of 6.
The next digit of our result is 8. 
Result so far: 90123.8
The remainder is 6 after subtracting 64 from 70.
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:
If we divide 60 by 8, we get 7 and a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 90123.87
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:
40 divided by 8 is 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 90123.875
If we subtract 40 from 40, we 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.

Step 10:
8 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 90123.875
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.

Let's proceed to step 11:
If we divide 0 by 8, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 90123.875
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.

After the division, we end up with 90123.875 and a remainder of 0.0.