108369 ÷ 31 
The aim is to understand the frequency of 31 in 108369.

Moving on to step 1:
31 goes into 1 0 times with 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.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 31

Let's proceed to step 2:
10 divided by 31 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 10, we get 10.
Take the next digit (8) from the dividend and append it to 10, then repeat: 108 / 31

On to step 3:
If we divide 108 by 31, we get 3 and a remainder of 15.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 15 after subtracting 93 from 108.
Fetch the next digit (3) from the dividend, attach it to 15 and continue: 153 / 31

Moving on to step 4:
The number 31 fits into 153 4 times, leaving a remainder of 29.
Record the quotient 4 as the next digit in the result. 
Result so far: 34.0
The remainder is 29 after subtracting 124 from 153.
Bring next digit (6) of the dividend behind the 29 and repeat the process: 296 / 31

On to step 5:
The number 31 fits into 296 9 times, leaving a remainder of 17.
The number 9 becomes the next digit in our result. 
Result so far: 349.0
If we take 279 away from 296, we end up with 17.
Fetch the next digit (9) from the dividend, attach it to 17 and continue: 179 / 31

Advancing to step 6:
The number 31 fits into 179 5 times, leaving a remainder of 24.
The next digit of our result is 5. 
Result so far: 3495.0
Deduct 155 from 179 and we're left with 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 7:
When dividing 240 by 31, we get 7 with a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 3495.7
Subtract 217 from 240 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 8:
When dividing 230 by 31, we get 7 with a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 3495.77
Subtracting 217 from 230 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

After the division, we end up with 3495.77 and a remainder of 0.013.