We divide 799398 by 66
The aim is to understand the frequency of 66 in 799398.

Moving on to step 1:
When dividing 7 by 66, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 66

Advancing to step 2:
79 divided by 66 is 1 with a remainder of 13.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 66 from 79 to get 13.
Bring next digit (9) of the dividend behind the 13 and repeat the process: 139 / 66

Moving on to step 3:
66 can be fit into 139 2 times, resulting in a remainder of 7.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 132 from 139, we get 7.
Include the next digit (3) from the dividend after 7, then repeat: 73 / 66

Moving on to step 4:
The number 66 fits into 73 1 times, leaving a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 121.0
Subtracting 66 from 73 leaves us with 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 66

Step 5:
If we divide 79 by 66, we get 1 and a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 1211.0
Deduct 66 from 79 and we're left with 13.
Append the next digit (8) from the dividend to 13 and continue with: 138 / 66

Let's proceed to step 6:
66 goes into 138 2 times with a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 12112.0
Subtract 132 from 138 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 7:
The number 66 fits into 60 0 times, leaving a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 12112.0
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.

Step 8:
66 can be fit into 600 9 times, resulting in a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 12112.09
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.

Going ahead to step 9:
The number 66 fits into 60 0 times, leaving a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 12112.09
The remainder is 60 after subtracting 0 from 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 10:
When dividing 600 by 66, we get 9 with a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 12112.0909
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.

Let's proceed to step 11:
60 divided by 66 is 0 with a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 12112.0909
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.

Advancing to step 12:
If we divide 600 by 66, we get 9 and a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 12112.090909
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.

Step 13:
60 divided by 66 is 0 with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 12112.090909
If we subtract 0 from 60, we 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.

Advancing to step 14:
If we divide 600 by 66, we get 9 and a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 12112.09090909
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.

Our division results in 12112.09090909 with a remaining 6e-09.