We look at the division of 30939553 by 258 
The aim is to understand the frequency of 258 in 30939553.

Step 1:
258 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 258

Advancing to step 2:
30 divided by 258 is 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 30 and we're left with 30.
Take the next digit (9) from the dividend and append it to 30, then repeat: 309 / 258

Let's proceed to step 3:
When dividing 309 by 258, we get 1 with a remainder of 51.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 258 from 309 and we're left with 51.
Append the next digit (3) from the dividend to 51 and continue with: 513 / 258

On to step 4:
258 can be fit into 513 1 times, resulting in a remainder of 255.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Subtracting 258 from 513 leaves us with 255.
Include the next digit (9) from the dividend after 255, then repeat: 2559 / 258

Going ahead to step 5:
258 goes into 2559 9 times with a remainder of 237.
The next digit of our result is 9. 
Result so far: 119.0
If we take 2322 away from 2559, we end up with 237.
Take the next digit (5) from the dividend and append it to 237, then repeat: 2375 / 258

On to step 6:
2375 divided by 258 is 9 with a remainder of 53.
Put 9 as the next digit of the answer. 
Result so far: 1199.0
Subtracting 2322 from 2375 leaves us with 53.
Bring next digit (5) of the dividend behind the 53 and repeat the process: 535 / 258

Step 7:
258 goes into 535 2 times with a remainder of 19.
Record the quotient 2 as the next digit in the result. 
Result so far: 11992.0
If we subtract 516 from 535, we get 19.
Bring next digit (3) of the dividend behind the 19 and repeat the process: 193 / 258

Advancing to step 8:
The number 258 fits into 193 0 times, leaving a remainder of 193.
The number 0 becomes the next digit in our result. 
Result so far: 119920.0
Subtract 0 from 193 to get 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Moving on to step 9:
If we divide 1930 by 258, we get 7 and a remainder of 124.
The number 7 becomes the next digit in our result. 
Result so far: 119920.7
Subtracting 1806 from 1930 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.

Going ahead to step 10:
The number 258 fits into 1240 4 times, leaving a remainder of 208.
The number 4 becomes the next digit in our result. 
Result so far: 119920.74
Deduct 1032 from 1240 and we're left with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Advancing to step 11:
If we divide 2080 by 258, we get 8 and a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 119920.748
Deduct 2064 from 2080 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 12:
258 can be fit into 160 0 times, resulting in a remainder of 160.
The next digit of our result is 0. 
Result so far: 119920.748
Subtract 0 from 160 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 13:
258 goes into 1600 6 times with a remainder of 52.
Use 6 as the next digit of our solution. 
Result so far: 119920.74806
Subtract 1548 from 1600 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 14:
258 goes into 520 2 times with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 119920.748062
Subtract 516 from 520 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 15:
If we divide 40 by 258, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 119920.748062
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 16:
If we divide 400 by 258, we get 1 and a remainder of 142.
Use 1 as the next digit of our solution. 
Result so far: 119920.74806201
Subtract 258 from 400 to get 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

The quotient of the division is 119920.74806201, and the remainder is 1.42e-07.