122919 divided by 12 
We're looking to find how many times 12 goes into 122919.

Going ahead to step 1:
1 divided by 12 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 12

On to step 2:
12 divided by 12 is 1 with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 0 after subtracting 12 from 12.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 12

Advancing to step 3:
12 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 12

Let's proceed to step 4:
29 divided by 12 is 2 with a remainder of 5.
The next digit of our result is 2. 
Result so far: 102.0
If we take 24 away from 29, we end up with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 12

Moving on to step 5:
51 divided by 12 is 4 with a remainder of 3.
Record the quotient 4 as the next digit in the result. 
Result so far: 1024.0
Subtract 48 from 51 to get 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 12

Going ahead to step 6:
12 can be fit into 39 3 times, resulting in a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 10243.0
If we subtract 36 from 39, we 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.

On to step 7:
12 goes into 30 2 times with a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 10243.2
If we subtract 24 from 30, 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.

Let's proceed to step 8:
When dividing 60 by 12, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 10243.25
If we take 60 away from 60, 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.

Going ahead to step 9:
12 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 10243.25
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.

Advancing to step 10:
If we divide 0 by 12, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 10243.25
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.

Our division results in 10243.25 with a remaining 0.0.