We look at the division of 66227422 by 13 
The aim is to understand the frequency of 13 in 66227422.

Step 1:
The number 13 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 13

Step 2:
66 divided by 13 is 5 with a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we take 65 away from 66, we end up with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 13

On to step 3:
If we divide 12 by 13, we get 0 and a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 50.0
Subtracting 0 from 12 leaves us with 12.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 13

Going ahead to step 4:
13 can be fit into 122 9 times, resulting in a remainder of 5.
Use 9 as the next digit of our solution. 
Result so far: 509.0
Subtract 117 from 122 to get 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 13

Let's proceed to step 5:
If we divide 57 by 13, we get 4 and a remainder of 5.
The next digit of our result is 4. 
Result so far: 5094.0
The remainder is 5 after subtracting 52 from 57.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 13

Let's proceed to step 6:
13 can be fit into 54 4 times, resulting in a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 50944.0
Deduct 52 from 54 and we're left with 2.
Bring next digit (2) of the dividend behind the 2 and repeat the process: 22 / 13

Going ahead to step 7:
13 can be fit into 22 1 times, resulting in a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 509441.0
Subtract 13 from 22 to get 9.
Grab the next digit (2) from the dividend, add it to 9, then carry on: 92 / 13

Step 8:
13 can be fit into 92 7 times, resulting in a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 5094417.0
Subtracting 91 from 92 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 9:
13 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 5094417.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 10:
100 divided by 13 is 7 with a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 5094417.07
Subtract 91 from 100 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.

Advancing to step 11:
The number 13 fits into 90 6 times, leaving a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 5094417.076
If we take 78 away from 90, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 12:
If we divide 120 by 13, we get 9 and a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 5094417.0769
If we subtract 117 from 120, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 13:
30 divided by 13 is 2 with a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 5094417.07692
Subtracting 26 from 30 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 14:
13 goes into 40 3 times with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 5094417.076923
Deduct 39 from 40 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 15:
13 goes into 10 0 times with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 5094417.076923
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 16:
13 goes into 100 7 times with a remainder of 9.
Put 7 as the next digit of the answer. 
Result so far: 5094417.07692307
If we subtract 91 from 100, 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.

The quotient of the division is 5094417.07692307, and the remainder is 9e-09.