We're dividing 815427 by 66 
Let's see how many times 66 fits into 815427.

On to step 1:
66 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 66

On to step 2:
66 goes into 81 1 times with a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 66 from 81 leaves us with 15.
Take the next digit (5) from the dividend and append it to 15, then repeat: 155 / 66

Advancing to step 3:
If we divide 155 by 66, we get 2 and a remainder of 23.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtracting 132 from 155 leaves us with 23.
Bring next digit (4) of the dividend behind the 23 and repeat the process: 234 / 66

Advancing to step 4:
234 divided by 66 is 3 with a remainder of 36.
Record the quotient 3 as the next digit in the result. 
Result so far: 123.0
If we take 198 away from 234, we end up with 36.
Append the next digit (2) from the dividend to 36 and continue with: 362 / 66

Step 5:
The number 66 fits into 362 5 times, leaving a remainder of 32.
The number 5 becomes the next digit in our result. 
Result so far: 1235.0
Deduct 330 from 362 and we're left with 32.
Bring next digit (7) of the dividend behind the 32 and repeat the process: 327 / 66

Moving on to step 6:
327 divided by 66 is 4 with a remainder of 63.
Use 4 as the next digit of our solution. 
Result so far: 12354.0
If we subtract 264 from 327, we get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Moving on to step 7:
The number 66 fits into 630 9 times, leaving a remainder of 36.
Record the quotient 9 as the next digit in the result. 
Result so far: 12354.9
If we take 594 away from 630, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 8:
66 goes into 360 5 times with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 12354.95
If we subtract 330 from 360, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 9:
300 divided by 66 is 4 with a remainder of 36.
The next digit of our result is 4. 
Result so far: 12354.954
Deduct 264 from 300 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 10:
When dividing 360 by 66, we get 5 with a remainder of 30.
The next digit of our result is 5. 
Result so far: 12354.9545
Deduct 330 from 360 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 11:
300 divided by 66 is 4 with a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 12354.95454
Subtracting 264 from 300 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 12:
The number 66 fits into 360 5 times, leaving a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 12354.954545
Subtract 330 from 360 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 13:
300 divided by 66 is 4 with a remainder of 36.
Record the quotient 4 as the next digit in the result. 
Result so far: 12354.9545454
The remainder is 36 after subtracting 264 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 14:
66 goes into 360 5 times with a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 12354.95454545
If we subtract 330 from 360, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Our division results in 12354.95454545 with a remaining 3e-08.