We look at the division of 13808828 by 212 
The aim is to understand the frequency of 212 in 13808828.

On to step 1:
212 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 212

Let's proceed to step 2:
When dividing 13 by 212, we get 0 with a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 13, we get 13.
Include the next digit (8) from the dividend after 13, then repeat: 138 / 212

Moving on to step 3:
138 divided by 212 is 0 with a remainder of 138.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 138 after subtracting 0 from 138.
Bring next digit (0) of the dividend behind the 138 and repeat the process: 1380 / 212

Going ahead to step 4:
1380 divided by 212 is 6 with a remainder of 108.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 1272 from 1380 and we're left with 108.
Bring next digit (8) of the dividend behind the 108 and repeat the process: 1088 / 212

Step 5:
The number 212 fits into 1088 5 times, leaving a remainder of 28.
The number 5 becomes the next digit in our result. 
Result so far: 65.0
If we subtract 1060 from 1088, we get 28.
Bring next digit (8) of the dividend behind the 28 and repeat the process: 288 / 212

Going ahead to step 6:
When dividing 288 by 212, we get 1 with a remainder of 76.
Record the quotient 1 as the next digit in the result. 
Result so far: 651.0
The remainder is 76 after subtracting 212 from 288.
Take the next digit (2) from the dividend and append it to 76, then repeat: 762 / 212

Advancing to step 7:
762 divided by 212 is 3 with a remainder of 126.
Put 3 as the next digit of the answer. 
Result so far: 6513.0
Subtracting 636 from 762 leaves us with 126.
Append the next digit (8) from the dividend to 126 and continue with: 1268 / 212

Step 8:
212 can be fit into 1268 5 times, resulting in a remainder of 208.
The number 5 becomes the next digit in our result. 
Result so far: 65135.0
Subtracting 1060 from 1268 leaves us with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Advancing to step 9:
When dividing 2080 by 212, we get 9 with a remainder of 172.
The next digit of our result is 9. 
Result so far: 65135.9
Subtracting 1908 from 2080 leaves us with 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Step 10:
When dividing 1720 by 212, we get 8 with a remainder of 24.
Write down 8 as next digit of the result. 
Result so far: 65135.98
Subtract 1696 from 1720 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
212 can be fit into 240 1 times, resulting in a remainder of 28.
Record the quotient 1 as the next digit in the result. 
Result so far: 65135.981
The remainder is 28 after subtracting 212 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 12:
280 divided by 212 is 1 with a remainder of 68.
Use 1 as the next digit of our solution. 
Result so far: 65135.9811
Subtract 212 from 280 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Our division results in 65135.9811 with a remaining 0.00068.