We look at the division of 423213 by 31 
The aim is to understand the frequency of 31 in 423213.

Going ahead to step 1:
31 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 31

Let's proceed to step 2:
31 can be fit into 42 1 times, resulting in a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 31 from 42 and we're left with 11.
Take the next digit (3) from the dividend and append it to 11, then repeat: 113 / 31

Advancing to step 3:
The number 31 fits into 113 3 times, leaving a remainder of 20.
Put 3 as the next digit of the answer. 
Result so far: 13.0
The remainder is 20 after subtracting 93 from 113.
Take the next digit (2) from the dividend and append it to 20, then repeat: 202 / 31

Let's proceed to step 4:
31 can be fit into 202 6 times, resulting in a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 136.0
If we subtract 186 from 202, we get 16.
Bring next digit (1) of the dividend behind the 16 and repeat the process: 161 / 31

Going ahead to step 5:
161 divided by 31 is 5 with a remainder of 6.
Put 5 as the next digit of the answer. 
Result so far: 1365.0
The remainder is 6 after subtracting 155 from 161.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 31

On to step 6:
31 goes into 63 2 times with a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 13652.0
If we subtract 62 from 63, we get 1.
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 7:
10 divided by 31 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 13652.0
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
If we divide 100 by 31, we get 3 and a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 13652.03
Subtracting 93 from 100 leaves us 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.

On to step 9:
If we divide 70 by 31, we get 2 and a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 13652.032
Subtract 62 from 70 to get 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 10:
31 goes into 80 2 times with a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 13652.0322
Subtracting 62 from 80 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

In conclusion, the division gives 13652.0322 with a balance of 0.00018.