We look at the division of 648280 by 69 
The aim is to understand the frequency of 69 in 648280.

On to step 1:
If we divide 6 by 69, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 69

Advancing to step 2:
The number 69 fits into 64 0 times, leaving a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Take the next digit (8) from the dividend and append it to 64, then repeat: 648 / 69

Moving on to step 3:
The number 69 fits into 648 9 times, leaving a remainder of 27.
Use 9 as the next digit of our solution. 
Result so far: 9.0
The remainder is 27 after subtracting 621 from 648.
Take the next digit (2) from the dividend and append it to 27, then repeat: 272 / 69

Advancing to step 4:
If we divide 272 by 69, we get 3 and a remainder of 65.
The next digit of our result is 3. 
Result so far: 93.0
Deduct 207 from 272 and we're left with 65.
Fetch the next digit (8) from the dividend, attach it to 65 and continue: 658 / 69

Let's proceed to step 5:
658 divided by 69 is 9 with a remainder of 37.
The number 9 becomes the next digit in our result. 
Result so far: 939.0
The remainder is 37 after subtracting 621 from 658.
Fetch the next digit (0) from the dividend, attach it to 37 and continue: 370 / 69

Moving on to step 6:
69 goes into 370 5 times with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 9395.0
Subtract 345 from 370 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.

Let's proceed to step 7:
The number 69 fits into 250 3 times, leaving a remainder of 43.
Use 3 as the next digit of our solution. 
Result so far: 9395.3
If we subtract 207 from 250, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 8:
69 can be fit into 430 6 times, resulting in a remainder of 16.
Record the quotient 6 as the next digit in the result. 
Result so far: 9395.36
Subtracting 414 from 430 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 9:
69 can be fit into 160 2 times, resulting in a remainder of 22.
The number 2 becomes the next digit in our result. 
Result so far: 9395.362
Subtract 138 from 160 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 10:
If we divide 220 by 69, we get 3 and a remainder of 13.
Record the quotient 3 as the next digit in the result. 
Result so far: 9395.3623
If we subtract 207 from 220, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 11:
If we divide 130 by 69, we get 1 and a remainder of 61.
Put 1 as the next digit of the answer. 
Result so far: 9395.36231
Subtract 69 from 130 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 12:
69 goes into 610 8 times with a remainder of 58.
Record the quotient 8 as the next digit in the result. 
Result so far: 9395.362318
Subtracting 552 from 610 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 13:
580 divided by 69 is 8 with a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 9395.3623188
If we take 552 away from 580, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Our division results in 9395.3623188 with a remaining 2.8e-07.