30148565 ÷ 31 
The aim is to understand the frequency of 31 in 30148565.

Going ahead to step 1:
If we divide 3 by 31, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 31

On to step 2:
The number 31 fits into 30 0 times, leaving a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 30 and we're left with 30.
Include the next digit (1) from the dividend after 30, then repeat: 301 / 31

Going ahead to step 3:
31 can be fit into 301 9 times, resulting in a remainder of 22.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Deduct 279 from 301 and we're left with 22.
Bring next digit (4) of the dividend behind the 22 and repeat the process: 224 / 31

Step 4:
31 goes into 224 7 times with a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 97.0
Subtracting 217 from 224 leaves us with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 31

Going ahead to step 5:
31 can be fit into 78 2 times, resulting in a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 972.0
If we take 62 away from 78, we end up with 16.
Take the next digit (5) from the dividend and append it to 16, then repeat: 165 / 31

Advancing to step 6:
If we divide 165 by 31, we get 5 and a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 9725.0
Subtract 155 from 165 to get 10.
Append the next digit (6) from the dividend to 10 and continue with: 106 / 31

Moving on to step 7:
106 divided by 31 is 3 with a remainder of 13.
Use 3 as the next digit of our solution. 
Result so far: 97253.0
Subtract 93 from 106 to get 13.
Append the next digit (5) from the dividend to 13 and continue with: 135 / 31

Moving on to step 8:
If we divide 135 by 31, we get 4 and a remainder of 11.
Write down 4 as next digit of the result. 
Result so far: 972534.0
Subtracting 124 from 135 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 9:
31 goes into 110 3 times with a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 972534.3
The remainder is 17 after subtracting 93 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 10:
The number 31 fits into 170 5 times, leaving a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 972534.35
Subtract 155 from 170 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 11:
When dividing 150 by 31, we get 4 with a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 972534.354
If we take 124 away from 150, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 12:
When dividing 260 by 31, we get 8 with a remainder of 12.
The next digit of our result is 8. 
Result so far: 972534.3548
If we take 248 away from 260, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 13:
31 can be fit into 120 3 times, resulting in a remainder of 27.
The next digit of our result is 3. 
Result so far: 972534.35483
Subtract 93 from 120 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 14:
270 divided by 31 is 8 with a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 972534.354838
If we subtract 248 from 270, 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.

Going ahead to step 15:
31 goes into 220 7 times with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 972534.3548387
Subtract 217 from 220 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 16:
When dividing 30 by 31, we get 0 with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 972534.3548387
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Our division results in 972534.3548387 with a remaining 3e-08.