816943 ÷ 66 
We're looking to find how many times 66 goes into 816943.

Moving on to step 1:
The number 66 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 66

Step 2:
66 can be fit into 81 1 times, resulting in a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 66 from 81, we get 15.
Include the next digit (6) from the dividend after 15, then repeat: 156 / 66

Moving on to step 3:
156 divided by 66 is 2 with a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 132 from 156, we get 24.
Include the next digit (9) from the dividend after 24, then repeat: 249 / 66

Advancing to step 4:
If we divide 249 by 66, we get 3 and a remainder of 51.
The next digit of our result is 3. 
Result so far: 123.0
Subtracting 198 from 249 leaves us with 51.
Fetch the next digit (4) from the dividend, attach it to 51 and continue: 514 / 66

Going ahead to step 5:
The number 66 fits into 514 7 times, leaving a remainder of 52.
Write down 7 as next digit of the result. 
Result so far: 1237.0
Subtracting 462 from 514 leaves us with 52.
Bring next digit (3) of the dividend behind the 52 and repeat the process: 523 / 66

Going ahead to step 6:
523 divided by 66 is 7 with a remainder of 61.
The next digit of our result is 7. 
Result so far: 12377.0
Deduct 462 from 523 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 7:
The number 66 fits into 610 9 times, leaving a remainder of 16.
Put 9 as the next digit of the answer. 
Result so far: 12377.9
Subtract 594 from 610 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.

Moving on to step 8:
When dividing 160 by 66, we get 2 with a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 12377.92
If we take 132 away from 160, we end up 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 9:
66 can be fit into 280 4 times, resulting in a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 12377.924
The remainder is 16 after subtracting 264 from 280.
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 10:
66 can be fit into 160 2 times, resulting in a remainder of 28.
The next digit of our result is 2. 
Result so far: 12377.9242
If we take 132 away from 160, we end up 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 11:
66 goes into 280 4 times with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 12377.92424
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.

Moving on to step 12:
The number 66 fits into 160 2 times, leaving a remainder of 28.
The next digit of our result is 2. 
Result so far: 12377.924242
If we take 132 away from 160, we end up 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.

Going ahead to step 13:
280 divided by 66 is 4 with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 12377.9242424
If we take 264 away from 280, we end up 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.

Advancing to step 14:
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: 12377.92424242
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.

In conclusion, the division gives 12377.92424242 with a balance of 2.8e-08.