We look at the division of 451240 by 66 
We're looking to find how many times 66 goes into 451240.

Going ahead to step 1:
66 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 66

Step 2:
When dividing 45 by 66, we get 0 with a remainder of 45.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 45 leaves us with 45.
Include the next digit (1) from the dividend after 45, then repeat: 451 / 66

Going ahead to step 3:
If we divide 451 by 66, we get 6 and a remainder of 55.
The next digit of our result is 6. 
Result so far: 6.0
Subtract 396 from 451 to get 55.
Grab the next digit (2) from the dividend, add it to 55, then carry on: 552 / 66

Moving on to step 4:
When dividing 552 by 66, we get 8 with a remainder of 24.
Put 8 as the next digit of the answer. 
Result so far: 68.0
Subtracting 528 from 552 leaves us with 24.
Grab the next digit (4) from the dividend, add it to 24, then carry on: 244 / 66

Going ahead to step 5:
66 can be fit into 244 3 times, resulting in a remainder of 46.
The number 3 becomes the next digit in our result. 
Result so far: 683.0
Subtract 198 from 244 to get 46.
Grab the next digit (0) from the dividend, add it to 46, then carry on: 460 / 66

Advancing to step 6:
When dividing 460 by 66, we get 6 with a remainder of 64.
The next digit of our result is 6. 
Result so far: 6836.0
Deduct 396 from 460 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 7:
If we divide 640 by 66, we get 9 and a remainder of 46.
The number 9 becomes the next digit in our result. 
Result so far: 6836.9
If we take 594 away from 640, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 8:
460 divided by 66 is 6 with a remainder of 64.
Write down 6 as next digit of the result. 
Result so far: 6836.96
If we subtract 396 from 460, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 9:
If we divide 640 by 66, we get 9 and a remainder of 46.
The next digit of our result is 9. 
Result so far: 6836.969
If we subtract 594 from 640, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 10:
When dividing 460 by 66, we get 6 with a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 6836.9696
Subtracting 396 from 460 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 11:
640 divided by 66 is 9 with a remainder of 46.
Record the quotient 9 as the next digit in the result. 
Result so far: 6836.96969
Deduct 594 from 640 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 12:
The number 66 fits into 460 6 times, leaving a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 6836.969696
The remainder is 64 after subtracting 396 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 13:
640 divided by 66 is 9 with a remainder of 46.
Record the quotient 9 as the next digit in the result. 
Result so far: 6836.9696969
If we subtract 594 from 640, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 14:
The number 66 fits into 460 6 times, leaving a remainder of 64.
Write down 6 as next digit of the result. 
Result so far: 6836.96969696
Subtract 396 from 460 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final outcome is 6836.96969696, with a leftover of 6.4e-08.