We look at the division of 99945222 by 12 
We're looking to find how many times 12 goes into 99945222.

Moving on to step 1:
If we divide 9 by 12, we get 0 and a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 12

Going ahead to step 2:
If we divide 99 by 12, we get 8 and a remainder of 3.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we subtract 96 from 99, we get 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 12

Step 3:
The number 12 fits into 39 3 times, leaving a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 83.0
Subtracting 36 from 39 leaves us with 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 12

Step 4:
12 goes into 34 2 times with a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 832.0
If we subtract 24 from 34, we get 10.
Fetch the next digit (5) from the dividend, attach it to 10 and continue: 105 / 12

Moving on to step 5:
If we divide 105 by 12, we get 8 and a remainder of 9.
The next digit of our result is 8. 
Result so far: 8328.0
Subtracting 96 from 105 leaves us with 9.
Include the next digit (2) from the dividend after 9, then repeat: 92 / 12

Going ahead to step 6:
When dividing 92 by 12, we get 7 with a remainder of 8.
Use 7 as the next digit of our solution. 
Result so far: 83287.0
Deduct 84 from 92 and we're left with 8.
Grab the next digit (2) from the dividend, add it to 8, then carry on: 82 / 12

Moving on to step 7:
12 can be fit into 82 6 times, resulting in a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 832876.0
If we subtract 72 from 82, we get 10.
Include the next digit (2) from the dividend after 10, then repeat: 102 / 12

Advancing to step 8:
12 goes into 102 8 times with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 8328768.0
Deduct 96 from 102 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 9:
When dividing 60 by 12, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 8328768.5
Subtracting 60 from 60 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.

Going ahead to step 10:
12 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 8328768.5
If we take 0 away from 0, 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 11:
The number 12 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 8328768.5
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.

The final result is 8328768.5 with a remainder of 0.0.