452997 ÷ 12 
We're looking to find how many times 12 goes into 452997.

Moving on to step 1:
The number 12 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 12

Step 2:
The number 12 fits into 45 3 times, leaving a remainder of 9.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 36 from 45 and we're left with 9.
Fetch the next digit (2) from the dividend, attach it to 9 and continue: 92 / 12

On to step 3:
92 divided by 12 is 7 with a remainder of 8.
Put 7 as the next digit of the answer. 
Result so far: 37.0
Subtracting 84 from 92 leaves us with 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 12

Let's proceed to step 4:
If we divide 89 by 12, we get 7 and a remainder of 5.
Put 7 as the next digit of the answer. 
Result so far: 377.0
Deduct 84 from 89 and we're left with 5.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 12

Advancing to step 5:
When dividing 59 by 12, we get 4 with a remainder of 11.
Use 4 as the next digit of our solution. 
Result so far: 3774.0
Deduct 48 from 59 and we're left with 11.
Include the next digit (7) from the dividend after 11, then repeat: 117 / 12

Going ahead to step 6:
117 divided by 12 is 9 with a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 37749.0
Subtract 108 from 117 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
When dividing 90 by 12, we get 7 with a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 37749.7
If we take 84 away from 90, we end up 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.

Let's proceed to step 8:
When dividing 60 by 12, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 37749.75
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.

On to step 9:
When dividing 0 by 12, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 37749.75
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 10:
12 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 37749.75
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 37749.75 with a remainder of 0.0.