Let's divide 313972 by 30
The aim is to understand the frequency of 30 in 313972.

On to step 1:
30 can be fit into 3 0 times, resulting in a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 30

On to step 2:
The number 30 fits into 31 1 times, leaving a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 30 from 31 and we're left with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 30

Advancing to step 3:
30 can be fit into 13 0 times, resulting in a remainder of 13.
The next digit of our result is 0. 
Result so far: 10.0
Deduct 0 from 13 and we're left with 13.
Append the next digit (9) from the dividend to 13 and continue with: 139 / 30

On to step 4:
139 divided by 30 is 4 with a remainder of 19.
Write down 4 as next digit of the result. 
Result so far: 104.0
Subtract 120 from 139 to get 19.
Take the next digit (7) from the dividend and append it to 19, then repeat: 197 / 30

Advancing to step 5:
30 goes into 197 6 times with a remainder of 17.
The number 6 becomes the next digit in our result. 
Result so far: 1046.0
If we subtract 180 from 197, we get 17.
Grab the next digit (2) from the dividend, add it to 17, then carry on: 172 / 30

Let's proceed to step 6:
30 can be fit into 172 5 times, resulting in a remainder of 22.
Put 5 as the next digit of the answer. 
Result so far: 10465.0
If we subtract 150 from 172, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 7:
If we divide 220 by 30, we get 7 and a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 10465.7
The remainder is 10 after subtracting 210 from 220.
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 8:
When dividing 100 by 30, we get 3 with a remainder of 10.
The next digit of our result is 3. 
Result so far: 10465.73
If we take 90 away from 100, we end up 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.

Let's proceed to step 9:
The number 30 fits into 100 3 times, leaving a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 10465.733
If we take 90 away from 100, we end up 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.

The final outcome is 10465.733, with a leftover of 0.001.