We look at the division of 25931 by 67 
The aim is to understand the frequency of 67 in 25931.

Advancing to step 1:
67 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 67

Going ahead to step 2:
If we divide 25 by 67, we get 0 and a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 25 to get 25.
Include the next digit (9) from the dividend after 25, then repeat: 259 / 67

Step 3:
67 can be fit into 259 3 times, resulting in a remainder of 58.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 201 away from 259, we end up with 58.
Bring next digit (3) of the dividend behind the 58 and repeat the process: 583 / 67

Moving on to step 4:
67 goes into 583 8 times with a remainder of 47.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
Subtracting 536 from 583 leaves us with 47.
Include the next digit (1) from the dividend after 47, then repeat: 471 / 67

Advancing to step 5:
If we divide 471 by 67, we get 7 and a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 387.0
Subtracting 469 from 471 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 6:
If we divide 20 by 67, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 387.0
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 7:
67 can be fit into 200 2 times, resulting in a remainder of 66.
Record the quotient 2 as the next digit in the result. 
Result so far: 387.02
Deduct 134 from 200 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 8:
The number 67 fits into 660 9 times, leaving a remainder of 57.
The next digit of our result is 9. 
Result so far: 387.029
Deduct 603 from 660 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 9:
If we divide 570 by 67, we get 8 and a remainder of 34.
Use 8 as the next digit of our solution. 
Result so far: 387.0298
Subtracting 536 from 570 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 10:
340 divided by 67 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 387.02985
If we subtract 335 from 340, 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.

On to step 11:
67 goes into 50 0 times with a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 387.02985
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 12:
67 goes into 500 7 times with a remainder of 31.
Use 7 as the next digit of our solution. 
Result so far: 387.0298507
Deduct 469 from 500 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 13:
310 divided by 67 is 4 with a remainder of 42.
Put 4 as the next digit of the answer. 
Result so far: 387.02985074
Subtract 268 from 310 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

The final outcome is 387.02985074, with a leftover of 4.2e-08.