431800 ÷ 66 
We want to divide 431800 by 66.

Going ahead to step 1:
4 divided by 66 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 66

On to step 2:
66 can be fit into 43 0 times, resulting in a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 43 to get 43.
Bring next digit (1) of the dividend behind the 43 and repeat the process: 431 / 66

Going ahead to step 3:
The number 66 fits into 431 6 times, leaving a remainder of 35.
The next digit of our result is 6. 
Result so far: 6.0
Subtract 396 from 431 to get 35.
Include the next digit (8) from the dividend after 35, then repeat: 358 / 66

Going ahead to step 4:
66 can be fit into 358 5 times, resulting in a remainder of 28.
Write down 5 as next digit of the result. 
Result so far: 65.0
Deduct 330 from 358 and we're left with 28.
Append the next digit (0) from the dividend to 28 and continue with: 280 / 66

Moving on to step 5:
66 goes into 280 4 times with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 654.0
If we subtract 264 from 280, we get 16.
Grab the next digit (0) from the dividend, add it to 16, then carry on: 160 / 66

On to step 6:
66 can be fit into 160 2 times, resulting in a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 6542.0
Deduct 132 from 160 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 7:
280 divided by 66 is 4 with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 6542.4
Subtract 264 from 280 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 8:
The number 66 fits into 160 2 times, leaving a remainder of 28.
The next digit of our result is 2. 
Result so far: 6542.42
The remainder is 28 after subtracting 132 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 9:
280 divided by 66 is 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 6542.424
Deduct 264 from 280 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 10:
The number 66 fits into 160 2 times, leaving a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 6542.4242
The remainder is 28 after subtracting 132 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 11:
66 can be fit into 280 4 times, resulting in a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 6542.42424
Subtract 264 from 280 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 12:
66 goes into 160 2 times with a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 6542.424242
Subtracting 132 from 160 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 13:
When dividing 280 by 66, we get 4 with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 6542.4242424
If we subtract 264 from 280, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 14:
The number 66 fits into 160 2 times, leaving a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 6542.42424242
If we subtract 132 from 160, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Our division results in 6542.42424242 with a remaining 2.8e-08.