We look at the division of 257288 by 13 
The aim is to understand the frequency of 13 in 257288.

Moving on to step 1:
13 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 13

Let's proceed to step 2:
13 can be fit into 25 1 times, resulting in a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 13 from 25 leaves us with 12.
Append the next digit (7) from the dividend to 12 and continue with: 127 / 13

Moving on to step 3:
If we divide 127 by 13, we get 9 and a remainder of 10.
Put 9 as the next digit of the answer. 
Result so far: 19.0
Deduct 117 from 127 and we're left with 10.
Append the next digit (2) from the dividend to 10 and continue with: 102 / 13

Going ahead to step 4:
102 divided by 13 is 7 with a remainder of 11.
Write down 7 as next digit of the result. 
Result so far: 197.0
Deduct 91 from 102 and we're left with 11.
Bring next digit (8) of the dividend behind the 11 and repeat the process: 118 / 13

Step 5:
When dividing 118 by 13, we get 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 1979.0
If we take 117 away from 118, we end up with 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 13

Advancing to step 6:
When dividing 18 by 13, we get 1 with a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 19791.0
If we subtract 13 from 18, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 7:
13 can be fit into 50 3 times, resulting in a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 19791.3
If we take 39 away from 50, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 8:
13 goes into 110 8 times with a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 19791.38
Subtract 104 from 110 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 9:
13 can be fit into 60 4 times, resulting in a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 19791.384
The remainder is 8 after subtracting 52 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
13 can be fit into 80 6 times, resulting in a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 19791.3846
If we subtract 78 from 80, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 11:
When dividing 20 by 13, we get 1 with a remainder of 7.
The next digit of our result is 1. 
Result so far: 19791.38461
Deduct 13 from 20 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 12:
13 can be fit into 70 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 19791.384615
If we take 65 away from 70, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 13:
50 divided by 13 is 3 with a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 19791.3846153
Subtracting 39 from 50 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 14:
13 goes into 110 8 times with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 19791.38461538
If we take 104 away from 110, we end up 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.

The final result is 19791.38461538 with a remainder of 6e-09.