31387650 ÷ 235 
The aim is to understand the frequency of 235 in 31387650.

Let's proceed to step 1:
When dividing 3 by 235, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 235

Moving on to step 2:
When dividing 31 by 235, we get 0 with a remainder of 31.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 31 leaves us with 31.
Take the next digit (3) from the dividend and append it to 31, then repeat: 313 / 235

Moving on to step 3:
235 can be fit into 313 1 times, resulting in a remainder of 78.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 235 from 313 to get 78.
Bring next digit (8) of the dividend behind the 78 and repeat the process: 788 / 235

Going ahead to step 4:
788 divided by 235 is 3 with a remainder of 83.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtracting 705 from 788 leaves us with 83.
Append the next digit (7) from the dividend to 83 and continue with: 837 / 235

Step 5:
235 goes into 837 3 times with a remainder of 132.
The next digit of our result is 3. 
Result so far: 133.0
If we subtract 705 from 837, we get 132.
Include the next digit (6) from the dividend after 132, then repeat: 1326 / 235

Let's proceed to step 6:
1326 divided by 235 is 5 with a remainder of 151.
The next digit of our result is 5. 
Result so far: 1335.0
Subtract 1175 from 1326 to get 151.
Take the next digit (5) from the dividend and append it to 151, then repeat: 1515 / 235

Going ahead to step 7:
The number 235 fits into 1515 6 times, leaving a remainder of 105.
The next digit of our result is 6. 
Result so far: 13356.0
Deduct 1410 from 1515 and we're left with 105.
Grab the next digit (0) from the dividend, add it to 105, then carry on: 1050 / 235

Step 8:
If we divide 1050 by 235, we get 4 and a remainder of 110.
Write down 4 as next digit of the result. 
Result so far: 133564.0
Subtracting 940 from 1050 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Going ahead to step 9:
235 can be fit into 1100 4 times, resulting in a remainder of 160.
Put 4 as the next digit of the answer. 
Result so far: 133564.4
Subtracting 940 from 1100 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 10:
1600 divided by 235 is 6 with a remainder of 190.
Record the quotient 6 as the next digit in the result. 
Result so far: 133564.46
Deduct 1410 from 1600 and we're left with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Moving on to step 11:
When dividing 1900 by 235, we get 8 with a remainder of 20.
The number 8 becomes the next digit in our result. 
Result so far: 133564.468
Subtract 1880 from 1900 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 12:
The number 235 fits into 200 0 times, leaving a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 133564.468
Subtract 0 from 200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 13:
If we divide 2000 by 235, we get 8 and a remainder of 120.
Put 8 as the next digit of the answer. 
Result so far: 133564.46808
Subtract 1880 from 2000 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 14:
1200 divided by 235 is 5 with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 133564.468085
Deduct 1175 from 1200 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 15:
When dividing 250 by 235, we get 1 with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 133564.4680851
If we subtract 235 from 250, we 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.

Moving on to step 16:
150 divided by 235 is 0 with a remainder of 150.
Put 0 as the next digit of the answer. 
Result so far: 133564.4680851
If we take 0 away from 150, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

The final outcome is 133564.4680851, with a leftover of 1.5e-07.