191921 divided by 8 
We want to figure out the number of times 191921 can be divided by 8.

Advancing to step 1:
8 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 8

On to step 2:
8 goes into 19 2 times with a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 16 from 19, we get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 8

Going ahead to step 3:
31 divided by 8 is 3 with a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
The remainder is 7 after subtracting 24 from 31.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 8

Moving on to step 4:
The number 8 fits into 79 9 times, leaving a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 239.0
If we take 72 away from 79, we end up with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 8

Step 5:
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: 2399.0
If we take 72 away from 72, we end up with 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 8

Advancing to step 6:
The number 8 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 23990.0
The remainder is 1 after subtracting 0 from 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
When dividing 10 by 8, we get 1 with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 23990.1
Subtract 8 from 10 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 8:
8 goes into 20 2 times with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 23990.12
If we take 16 away from 20, 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.

Let's proceed to step 9:
8 can be fit into 40 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 23990.125
The remainder is 0 after subtracting 40 from 40.
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:
When dividing 0 by 8, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 23990.125
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 11:
If we divide 0 by 8, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 23990.125
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 23990.125 with a remainder of 0.0.