We look at the division of 97323913 by 257 
The aim is to understand the frequency of 257 in 97323913.

On to step 1:
When dividing 9 by 257, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (7) from the dividend to 9 and continue with: 97 / 257

On to step 2:
97 divided by 257 is 0 with a remainder of 97.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 97, we end up with 97.
Grab the next digit (3) from the dividend, add it to 97, then carry on: 973 / 257

On to step 3:
973 divided by 257 is 3 with a remainder of 202.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 771 away from 973, we end up with 202.
Fetch the next digit (2) from the dividend, attach it to 202 and continue: 2022 / 257

Going ahead to step 4:
257 can be fit into 2022 7 times, resulting in a remainder of 223.
Record the quotient 7 as the next digit in the result. 
Result so far: 37.0
If we take 1799 away from 2022, we end up with 223.
Bring next digit (3) of the dividend behind the 223 and repeat the process: 2233 / 257

On to step 5:
If we divide 2233 by 257, we get 8 and a remainder of 177.
Put 8 as the next digit of the answer. 
Result so far: 378.0
If we subtract 2056 from 2233, we get 177.
Fetch the next digit (9) from the dividend, attach it to 177 and continue: 1779 / 257

Step 6:
If we divide 1779 by 257, we get 6 and a remainder of 237.
The next digit of our result is 6. 
Result so far: 3786.0
If we subtract 1542 from 1779, we get 237.
Fetch the next digit (1) from the dividend, attach it to 237 and continue: 2371 / 257

Step 7:
2371 divided by 257 is 9 with a remainder of 58.
Put 9 as the next digit of the answer. 
Result so far: 37869.0
If we take 2313 away from 2371, we end up with 58.
Take the next digit (3) from the dividend and append it to 58, then repeat: 583 / 257

Step 8:
The number 257 fits into 583 2 times, leaving a remainder of 69.
The next digit of our result is 2. 
Result so far: 378692.0
Subtract 514 from 583 to get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 9:
257 can be fit into 690 2 times, resulting in a remainder of 176.
The next digit of our result is 2. 
Result so far: 378692.2
If we take 514 away from 690, we end up with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Moving on to step 10:
The number 257 fits into 1760 6 times, leaving a remainder of 218.
The next digit of our result is 6. 
Result so far: 378692.26
Subtract 1542 from 1760 to get 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Let's proceed to step 11:
When dividing 2180 by 257, we get 8 with a remainder of 124.
Use 8 as the next digit of our solution. 
Result so far: 378692.268
Subtracting 2056 from 2180 leaves us with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Moving on to step 12:
1240 divided by 257 is 4 with a remainder of 212.
The next digit of our result is 4. 
Result so far: 378692.2684
The remainder is 212 after subtracting 1028 from 1240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Step 13:
257 can be fit into 2120 8 times, resulting in a remainder of 64.
Write down 8 as next digit of the result. 
Result so far: 378692.26848
The remainder is 64 after subtracting 2056 from 2120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 14:
257 goes into 640 2 times with a remainder of 126.
The number 2 becomes the next digit in our result. 
Result so far: 378692.268482
Subtracting 514 from 640 leaves us with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Moving on to step 15:
If we divide 1260 by 257, we get 4 and a remainder of 232.
Put 4 as the next digit of the answer. 
Result so far: 378692.2684824
If we subtract 1028 from 1260, we get 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

On to step 16:
257 goes into 2320 9 times with a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 378692.26848249
The remainder is 7 after subtracting 2313 from 2320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The final result is 378692.26848249 with a remainder of 7e-09.