We're dividing 18662406 by 666 
Our goal is to divide 18662406 by 666.

Step 1:
If we divide 1 by 666, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 666

Advancing to step 2:
666 can be fit into 18 0 times, resulting in a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 18 after subtracting 0 from 18.
Fetch the next digit (6) from the dividend, attach it to 18 and continue: 186 / 666

Moving on to step 3:
The number 666 fits into 186 0 times, leaving a remainder of 186.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 186, we end up with 186.
Take the next digit (6) from the dividend and append it to 186, then repeat: 1866 / 666

Going ahead to step 4:
When dividing 1866 by 666, we get 2 with a remainder of 534.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 1332 from 1866 to get 534.
Fetch the next digit (2) from the dividend, attach it to 534 and continue: 5342 / 666

Going ahead to step 5:
666 goes into 5342 8 times with a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 28.0
If we take 5328 away from 5342, we end up with 14.
Grab the next digit (4) from the dividend, add it to 14, then carry on: 144 / 666

Let's proceed to step 6:
144 divided by 666 is 0 with a remainder of 144.
Use 0 as the next digit of our solution. 
Result so far: 280.0
Subtract 0 from 144 to get 144.
Append the next digit (0) from the dividend to 144 and continue with: 1440 / 666

Let's proceed to step 7:
1440 divided by 666 is 2 with a remainder of 108.
The number 2 becomes the next digit in our result. 
Result so far: 2802.0
The remainder is 108 after subtracting 1332 from 1440.
Grab the next digit (6) from the dividend, add it to 108, then carry on: 1086 / 666

Step 8:
666 goes into 1086 1 times with a remainder of 420.
Record the quotient 1 as the next digit in the result. 
Result so far: 28021.0
Deduct 666 from 1086 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Going ahead to step 9:
The number 666 fits into 4200 6 times, leaving a remainder of 204.
Put 6 as the next digit of the answer. 
Result so far: 28021.6
The remainder is 204 after subtracting 3996 from 4200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Moving on to step 10:
666 can be fit into 2040 3 times, resulting in a remainder of 42.
Record the quotient 3 as the next digit in the result. 
Result so far: 28021.63
The remainder is 42 after subtracting 1998 from 2040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 11:
If we divide 420 by 666, we get 0 and a remainder of 420.
Record the quotient 0 as the next digit in the result. 
Result so far: 28021.63
Subtract 0 from 420 to get 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Moving on to step 12:
666 can be fit into 4200 6 times, resulting in a remainder of 204.
The number 6 becomes the next digit in our result. 
Result so far: 28021.6306
Deduct 3996 from 4200 and we're left with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Moving on to step 13:
666 can be fit into 2040 3 times, resulting in a remainder of 42.
The number 3 becomes the next digit in our result. 
Result so far: 28021.63063
Deduct 1998 from 2040 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 14:
420 divided by 666 is 0 with a remainder of 420.
Record the quotient 0 as the next digit in the result. 
Result so far: 28021.63063
Deduct 0 from 420 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Step 15:
4200 divided by 666 is 6 with a remainder of 204.
Write down 6 as next digit of the result. 
Result so far: 28021.6306306
Subtract 3996 from 4200 to get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Let's proceed to step 16:
2040 divided by 666 is 3 with a remainder of 42.
Put 3 as the next digit of the answer. 
Result so far: 28021.63063063
Subtract 1998 from 2040 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Our division results in 28021.63063063 with a remaining 4.2e-08.