Let's divide 8393109 by 257
The aim is to understand the frequency of 257 in 8393109.

On to step 1:
When dividing 8 by 257, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 257

On to step 2:
The number 257 fits into 83 0 times, leaving a remainder of 83.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 83 leaves us with 83.
Fetch the next digit (9) from the dividend, attach it to 83 and continue: 839 / 257

On to step 3:
257 can be fit into 839 3 times, resulting in a remainder of 68.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 771 from 839 and we're left with 68.
Append the next digit (3) from the dividend to 68 and continue with: 683 / 257

Let's proceed to step 4:
257 can be fit into 683 2 times, resulting in a remainder of 169.
Use 2 as the next digit of our solution. 
Result so far: 32.0
The remainder is 169 after subtracting 514 from 683.
Take the next digit (1) from the dividend and append it to 169, then repeat: 1691 / 257

Advancing to step 5:
The number 257 fits into 1691 6 times, leaving a remainder of 149.
Put 6 as the next digit of the answer. 
Result so far: 326.0
Deduct 1542 from 1691 and we're left with 149.
Take the next digit (0) from the dividend and append it to 149, then repeat: 1490 / 257

On to step 6:
If we divide 1490 by 257, we get 5 and a remainder of 205.
The next digit of our result is 5. 
Result so far: 3265.0
If we subtract 1285 from 1490, we get 205.
Fetch the next digit (9) from the dividend, attach it to 205 and continue: 2059 / 257

Let's proceed to step 7:
The number 257 fits into 2059 8 times, leaving a remainder of 3.
The number 8 becomes the next digit in our result. 
Result so far: 32658.0
The remainder is 3 after subtracting 2056 from 2059.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 8:
The number 257 fits into 30 0 times, leaving a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 32658.0
If we take 0 away from 30, we end up 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 9:
The number 257 fits into 300 1 times, leaving a remainder of 43.
The number 1 becomes the next digit in our result. 
Result so far: 32658.01
If we take 257 away from 300, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 10:
430 divided by 257 is 1 with a remainder of 173.
Record the quotient 1 as the next digit in the result. 
Result so far: 32658.011
Subtract 257 from 430 to get 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Our division results in 32658.011 with a remaining 0.0173.