We're dividing 355239 by 66 
Our goal is to divide 355239 by 66.

Let's proceed to step 1:
If we divide 3 by 66, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 66

Step 2:
The number 66 fits into 35 0 times, leaving a remainder of 35.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 35 after subtracting 0 from 35.
Take the next digit (5) from the dividend and append it to 35, then repeat: 355 / 66

Moving on to step 3:
66 goes into 355 5 times with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 330 from 355 leaves us with 25.
Grab the next digit (2) from the dividend, add it to 25, then carry on: 252 / 66

Advancing to step 4:
The number 66 fits into 252 3 times, leaving a remainder of 54.
Write down 3 as next digit of the result. 
Result so far: 53.0
Deduct 198 from 252 and we're left with 54.
Take the next digit (3) from the dividend and append it to 54, then repeat: 543 / 66

Step 5:
66 goes into 543 8 times with a remainder of 15.
The next digit of our result is 8. 
Result so far: 538.0
If we take 528 away from 543, we end up with 15.
Fetch the next digit (9) from the dividend, attach it to 15 and continue: 159 / 66

Step 6:
66 goes into 159 2 times with a remainder of 27.
Use 2 as the next digit of our solution. 
Result so far: 5382.0
If we take 132 away from 159, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 7:
If we divide 270 by 66, we get 4 and a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 5382.4
Subtracting 264 from 270 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
When dividing 60 by 66, we get 0 with a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 5382.4
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 9:
If we divide 600 by 66, we get 9 and a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 5382.409
If we subtract 594 from 600, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 10:
The number 66 fits into 60 0 times, leaving a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 5382.409
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 11:
If we divide 600 by 66, we get 9 and a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 5382.40909
Subtract 594 from 600 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 12:
66 goes into 60 0 times with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 5382.40909
If we take 0 away from 60, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 13:
66 goes into 600 9 times with a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 5382.4090909
Subtracting 594 from 600 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 14:
66 can be fit into 60 0 times, resulting in a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 5382.4090909
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final outcome is 5382.4090909, with a leftover of 6e-08.