We divide 27541569 by 666
The aim is to understand the frequency of 666 in 27541569.

Let's proceed to step 1:
2 divided by 666 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (7) from the dividend and append it to 2, then repeat: 27 / 666

Let's proceed to step 2:
27 divided by 666 is 0 with a remainder of 27.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 27 after subtracting 0 from 27.
Include the next digit (5) from the dividend after 27, then repeat: 275 / 666

On to step 3:
275 divided by 666 is 0 with a remainder of 275.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 275, we get 275.
Append the next digit (4) from the dividend to 275 and continue with: 2754 / 666

Moving on to step 4:
The number 666 fits into 2754 4 times, leaving a remainder of 90.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 2664 from 2754 leaves us with 90.
Bring next digit (1) of the dividend behind the 90 and repeat the process: 901 / 666

Going ahead to step 5:
If we divide 901 by 666, we get 1 and a remainder of 235.
Put 1 as the next digit of the answer. 
Result so far: 41.0
Subtracting 666 from 901 leaves us with 235.
Include the next digit (5) from the dividend after 235, then repeat: 2355 / 666

On to step 6:
666 goes into 2355 3 times with a remainder of 357.
Record the quotient 3 as the next digit in the result. 
Result so far: 413.0
Subtract 1998 from 2355 to get 357.
Fetch the next digit (6) from the dividend, attach it to 357 and continue: 3576 / 666

Let's proceed to step 7:
When dividing 3576 by 666, we get 5 with a remainder of 246.
Record the quotient 5 as the next digit in the result. 
Result so far: 4135.0
Deduct 3330 from 3576 and we're left with 246.
Take the next digit (9) from the dividend and append it to 246, then repeat: 2469 / 666

On to step 8:
The number 666 fits into 2469 3 times, leaving a remainder of 471.
Use 3 as the next digit of our solution. 
Result so far: 41353.0
If we take 1998 away from 2469, we end up with 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

Step 9:
666 goes into 4710 7 times with a remainder of 48.
Put 7 as the next digit of the answer. 
Result so far: 41353.7
If we take 4662 away from 4710, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 10:
If we divide 480 by 666, we get 0 and a remainder of 480.
Put 0 as the next digit of the answer. 
Result so far: 41353.7
The remainder is 480 after subtracting 0 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Advancing to step 11:
If we divide 4800 by 666, we get 7 and a remainder of 138.
Write down 7 as next digit of the result. 
Result so far: 41353.707
If we subtract 4662 from 4800, we get 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Step 12:
The number 666 fits into 1380 2 times, leaving a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 41353.7072
Deduct 1332 from 1380 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 13:
The number 666 fits into 480 0 times, leaving a remainder of 480.
The next digit of our result is 0. 
Result so far: 41353.7072
If we subtract 0 from 480, we get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Advancing to step 14:
4800 divided by 666 is 7 with a remainder of 138.
Record the quotient 7 as the next digit in the result. 
Result so far: 41353.707207
Subtracting 4662 from 4800 leaves us with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Going ahead to step 15:
If we divide 1380 by 666, we get 2 and a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 41353.7072072
If we subtract 1332 from 1380, 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.

Going ahead to step 16:
666 can be fit into 480 0 times, resulting in a remainder of 480.
Use 0 as the next digit of our solution. 
Result so far: 41353.7072072
Subtract 0 from 480 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Our division results in 41353.7072072 with a remaining 4.8e-07.