We look at the division of 72869310 by 55 
The aim is to understand the frequency of 55 in 72869310.

Let's proceed to step 1:
55 goes into 7 0 times with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 55

Step 2:
When dividing 72 by 55, we get 1 with a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 55 from 72 to get 17.
Grab the next digit (8) from the dividend, add it to 17, then carry on: 178 / 55

Step 3:
The number 55 fits into 178 3 times, leaving a remainder of 13.
The next digit of our result is 3. 
Result so far: 13.0
The remainder is 13 after subtracting 165 from 178.
Include the next digit (6) from the dividend after 13, then repeat: 136 / 55

Advancing to step 4:
If we divide 136 by 55, we get 2 and a remainder of 26.
Put 2 as the next digit of the answer. 
Result so far: 132.0
The remainder is 26 after subtracting 110 from 136.
Include the next digit (9) from the dividend after 26, then repeat: 269 / 55

Advancing to step 5:
55 can be fit into 269 4 times, resulting in a remainder of 49.
Record the quotient 4 as the next digit in the result. 
Result so far: 1324.0
If we subtract 220 from 269, we get 49.
Grab the next digit (3) from the dividend, add it to 49, then carry on: 493 / 55

On to step 6:
55 can be fit into 493 8 times, resulting in a remainder of 53.
Write down 8 as next digit of the result. 
Result so far: 13248.0
Deduct 440 from 493 and we're left with 53.
Fetch the next digit (1) from the dividend, attach it to 53 and continue: 531 / 55

Moving on to step 7:
If we divide 531 by 55, we get 9 and a remainder of 36.
Use 9 as the next digit of our solution. 
Result so far: 132489.0
Deduct 495 from 531 and we're left with 36.
Include the next digit (0) from the dividend after 36, then repeat: 360 / 55

On to step 8:
360 divided by 55 is 6 with a remainder of 30.
The next digit of our result is 6. 
Result so far: 1324896.0
Subtracting 330 from 360 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 9:
55 goes into 300 5 times with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 1324896.5
If we take 275 away from 300, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 10:
When dividing 250 by 55, we get 4 with a remainder of 30.
The next digit of our result is 4. 
Result so far: 1324896.54
The remainder is 30 after subtracting 220 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 11:
If we divide 300 by 55, we get 5 and a remainder of 25.
The next digit of our result is 5. 
Result so far: 1324896.545
If we take 275 away from 300, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 12:
55 can be fit into 250 4 times, resulting in a remainder of 30.
Write down 4 as next digit of the result. 
Result so far: 1324896.5454
Subtracting 220 from 250 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 13:
The number 55 fits into 300 5 times, leaving a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 1324896.54545
If we take 275 away from 300, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 14:
55 can be fit into 250 4 times, resulting in a remainder of 30.
Record the quotient 4 as the next digit in the result. 
Result so far: 1324896.545454
The remainder is 30 after subtracting 220 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 15:
The number 55 fits into 300 5 times, leaving a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 1324896.5454545
Subtract 275 from 300 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 16:
55 can be fit into 250 4 times, resulting in a remainder of 30.
Put 4 as the next digit of the answer. 
Result so far: 1324896.54545454
The remainder is 30 after subtracting 220 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The quotient of the division is 1324896.54545454, and the remainder is 3e-08.