451877 ÷ 12 
We want to figure out the number of times 451877 can be divided by 12.

Going ahead to step 1:
When dividing 4 by 12, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 12

Going ahead to step 2:
12 goes into 45 3 times with a remainder of 9.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 36 away from 45, we end up with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 12

Advancing to step 3:
12 goes into 91 7 times with a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
If we take 84 away from 91, we end up with 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 12

Let's proceed to step 4:
When dividing 78 by 12, we get 6 with a remainder of 6.
The next digit of our result is 6. 
Result so far: 376.0
The remainder is 6 after subtracting 72 from 78.
Grab the next digit (7) from the dividend, add it to 6, then carry on: 67 / 12

On to step 5:
12 can be fit into 67 5 times, resulting in a remainder of 7.
Use 5 as the next digit of our solution. 
Result so far: 3765.0
The remainder is 7 after subtracting 60 from 67.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 12

Step 6:
12 goes into 77 6 times with a remainder of 5.
Record the quotient 6 as the next digit in the result. 
Result so far: 37656.0
The remainder is 5 after subtracting 72 from 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
50 divided by 12 is 4 with a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 37656.4
Deduct 48 from 50 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
20 divided by 12 is 1 with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 37656.41
Subtract 12 from 20 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
12 goes into 80 6 times with a remainder of 8.
The next digit of our result is 6. 
Result so far: 37656.416
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 10:
The number 12 fits into 80 6 times, leaving a remainder of 8.
The next digit of our result is 6. 
Result so far: 37656.4166
If we take 72 away from 80, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 37656.4166 with a remaining 8e-05.