245 divided by 31 
The aim is to understand the frequency of 31 in 245.

Going ahead to step 1:
When dividing 2 by 31, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (4) from the dividend, attach it to 2 and continue: 24 / 31

Moving on to step 2:
If we divide 24 by 31, we get 0 and a remainder of 24.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 24, we get 24.
Include the next digit (5) from the dividend after 24, then repeat: 245 / 31

Moving on to step 3:
31 goes into 245 7 times with a remainder of 28.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 217 from 245 and we're left 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.

Advancing to step 4:
31 can be fit into 280 9 times, resulting in a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 7.9
The remainder is 1 after subtracting 279 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 5:
31 can be fit into 10 0 times, resulting in a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 7.9
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 6:
100 divided by 31 is 3 with a remainder of 7.
The next digit of our result is 3. 
Result so far: 7.903
Subtract 93 from 100 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
31 can be fit into 70 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 7.9032
If we take 62 away from 70, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 8:
The number 31 fits into 80 2 times, leaving a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 7.90322
Subtract 62 from 80 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final result is 7.90322 with a remainder of 1.8e-05.