We divide 666488 by 11
The aim is to understand the frequency of 11 in 666488.

Advancing to step 1:
6 divided by 11 is 0 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.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 11

Going ahead to step 2:
11 can be fit into 66 6 times, resulting in a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we take 66 away from 66, we end up with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 11

On to step 3:
6 divided by 11 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 60.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 11

Let's proceed to step 4:
11 goes into 64 5 times with a remainder of 9.
The next digit of our result is 5. 
Result so far: 605.0
The remainder is 9 after subtracting 55 from 64.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 11

Moving on to step 5:
98 divided by 11 is 8 with a remainder of 10.
Write down 8 as next digit of the result. 
Result so far: 6058.0
Subtract 88 from 98 to get 10.
Take the next digit (8) from the dividend and append it to 10, then repeat: 108 / 11

Moving on to step 6:
If we divide 108 by 11, we get 9 and a remainder of 9.
Put 9 as the next digit of the answer. 
Result so far: 60589.0
Subtract 99 from 108 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
The number 11 fits into 90 8 times, leaving a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 60589.8
If we take 88 away from 90, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 8:
The number 11 fits into 20 1 times, leaving a remainder of 9.
The next digit of our result is 1. 
Result so far: 60589.81
If we take 11 away from 20, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 9:
If we divide 90 by 11, we get 8 and a remainder of 2.
The next digit of our result is 8. 
Result so far: 60589.818
Subtracting 88 from 90 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 10:
11 goes into 20 1 times with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 60589.8181
If we take 11 away from 20, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 11:
When dividing 90 by 11, we get 8 with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 60589.81818
Subtract 88 from 90 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 12:
If we divide 20 by 11, we get 1 and a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 60589.818181
Subtract 11 from 20 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 13:
When dividing 90 by 11, we get 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 60589.8181818
Subtracting 88 from 90 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 14:
When dividing 20 by 11, we get 1 with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 60589.81818181
If we subtract 11 from 20, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

In conclusion, the division gives 60589.81818181 with a balance of 9e-09.