399645 divided by 66 
We want to divide 399645 by 66.

Advancing to step 1:
If we divide 3 by 66, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 66

Going ahead to step 2:
66 can be fit into 39 0 times, resulting in a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Grab the next digit (9) from the dividend, add it to 39, then carry on: 399 / 66

Advancing to step 3:
When dividing 399 by 66, we get 6 with a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we take 396 away from 399, we end up with 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 66

Advancing to step 4:
If we divide 36 by 66, we get 0 and a remainder of 36.
Record the quotient 0 as the next digit in the result. 
Result so far: 60.0
Subtract 0 from 36 to get 36.
Fetch the next digit (4) from the dividend, attach it to 36 and continue: 364 / 66

Going ahead to step 5:
When dividing 364 by 66, we get 5 with a remainder of 34.
Put 5 as the next digit of the answer. 
Result so far: 605.0
The remainder is 34 after subtracting 330 from 364.
Take the next digit (5) from the dividend and append it to 34, then repeat: 345 / 66

Step 6:
When dividing 345 by 66, we get 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 6055.0
If we subtract 330 from 345, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 7:
When dividing 150 by 66, we get 2 with a remainder of 18.
The next digit of our result is 2. 
Result so far: 6055.2
Subtracting 132 from 150 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 8:
66 can be fit into 180 2 times, resulting in a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 6055.22
If we subtract 132 from 180, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The quotient of the division is 6055.22, and the remainder is 0.048.