We divide 243770 by 31
The aim is to understand the frequency of 31 in 243770.

Going ahead to step 1:
31 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 31

On to step 2:
When dividing 24 by 31, we get 0 with a remainder of 24.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 24 to get 24.
Grab the next digit (3) from the dividend, add it to 24, then carry on: 243 / 31

Let's proceed to step 3:
When dividing 243 by 31, we get 7 with a remainder of 26.
Use 7 as the next digit of our solution. 
Result so far: 7.0
The remainder is 26 after subtracting 217 from 243.
Grab the next digit (7) from the dividend, add it to 26, then carry on: 267 / 31

On to step 4:
31 goes into 267 8 times with a remainder of 19.
Write down 8 as next digit of the result. 
Result so far: 78.0
The remainder is 19 after subtracting 248 from 267.
Append the next digit (7) from the dividend to 19 and continue with: 197 / 31

Going ahead to step 5:
31 can be fit into 197 6 times, resulting in a remainder of 11.
Use 6 as the next digit of our solution. 
Result so far: 786.0
If we take 186 away from 197, we end up with 11.
Take the next digit (0) from the dividend and append it to 11, then repeat: 110 / 31

Step 6:
31 goes into 110 3 times with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 7863.0
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.

Let's proceed to step 7:
The number 31 fits into 170 5 times, leaving a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 7863.5
Deduct 155 from 170 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 8:
31 goes into 150 4 times with a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 7863.54
If we subtract 124 from 150, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 9:
31 goes into 260 8 times with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 7863.548
If we subtract 248 from 260, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 10:
120 divided by 31 is 3 with a remainder of 27.
Put 3 as the next digit of the answer. 
Result so far: 7863.5483
If we subtract 93 from 120, we 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.

On to step 11:
31 can be fit into 270 8 times, resulting in a remainder of 22.
Put 8 as the next digit of the answer. 
Result so far: 7863.54838
Subtract 248 from 270 to 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.

On to step 12:
31 goes into 220 7 times with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 7863.548387
Subtracting 217 from 220 leaves us with 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 13:
30 divided by 31 is 0 with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 7863.548387
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 14:
31 goes into 300 9 times with a remainder of 21.
The next digit of our result is 9. 
Result so far: 7863.54838709
The remainder is 21 after subtracting 279 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

The final result is 7863.54838709 with a remainder of 2.1e-08.