66783 ÷ 15 
Our goal is to divide 66783 by 15.

Advancing to step 1:
15 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 15

On to step 2:
15 goes into 66 4 times with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 60 from 66 and we're left with 6.
Fetch the next digit (7) from the dividend, attach it to 6 and continue: 67 / 15

Going ahead to step 3:
67 divided by 15 is 4 with a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 44.0
The remainder is 7 after subtracting 60 from 67.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 15

Let's proceed to step 4:
15 goes into 78 5 times with a remainder of 3.
The next digit of our result is 5. 
Result so far: 445.0
If we take 75 away from 78, we end up with 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 15

On to step 5:
The number 15 fits into 33 2 times, leaving a remainder of 3.
The next digit of our result is 2. 
Result so far: 4452.0
Subtracting 30 from 33 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 6:
If we divide 30 by 15, we get 2 and a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 4452.2
Deduct 30 from 30 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 7:
When dividing 0 by 15, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 4452.2
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
If we divide 0 by 15, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 4452.2
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 4452.2, with a leftover of 0.0.