5127823 ÷ 258 
The aim is to understand the frequency of 258 in 5127823.

Step 1:
If we divide 5 by 258, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 258

Moving on to step 2:
The number 258 fits into 51 0 times, leaving a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Fetch the next digit (2) from the dividend, attach it to 51 and continue: 512 / 258

Step 3:
When dividing 512 by 258, we get 1 with a remainder of 254.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 258 away from 512, we end up with 254.
Grab the next digit (7) from the dividend, add it to 254, then carry on: 2547 / 258

Going ahead to step 4:
258 goes into 2547 9 times with a remainder of 225.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
Subtracting 2322 from 2547 leaves us with 225.
Grab the next digit (8) from the dividend, add it to 225, then carry on: 2258 / 258

On to step 5:
The number 258 fits into 2258 8 times, leaving a remainder of 194.
Record the quotient 8 as the next digit in the result. 
Result so far: 198.0
Subtracting 2064 from 2258 leaves us with 194.
Append the next digit (2) from the dividend to 194 and continue with: 1942 / 258

Going ahead to step 6:
When dividing 1942 by 258, we get 7 with a remainder of 136.
Record the quotient 7 as the next digit in the result. 
Result so far: 1987.0
Subtract 1806 from 1942 to get 136.
Append the next digit (3) from the dividend to 136 and continue with: 1363 / 258

Step 7:
258 goes into 1363 5 times with a remainder of 73.
The number 5 becomes the next digit in our result. 
Result so far: 19875.0
If we take 1290 away from 1363, we end up with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Advancing to step 8:
The number 258 fits into 730 2 times, leaving a remainder of 214.
The next digit of our result is 2. 
Result so far: 19875.2
Subtracting 516 from 730 leaves us with 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Advancing to step 9:
When dividing 2140 by 258, we get 8 with a remainder of 76.
Use 8 as the next digit of our solution. 
Result so far: 19875.28
The remainder is 76 after subtracting 2064 from 2140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 10:
If we divide 760 by 258, we get 2 and a remainder of 244.
The number 2 becomes the next digit in our result. 
Result so far: 19875.282
Subtracting 516 from 760 leaves us with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Step 11:
The number 258 fits into 2440 9 times, leaving a remainder of 118.
Use 9 as the next digit of our solution. 
Result so far: 19875.2829
Deduct 2322 from 2440 and we're left with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Advancing to step 12:
1180 divided by 258 is 4 with a remainder of 148.
The number 4 becomes the next digit in our result. 
Result so far: 19875.28294
If we take 1032 away from 1180, we end up with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Let's proceed to step 13:
When dividing 1480 by 258, we get 5 with a remainder of 190.
Put 5 as the next digit of the answer. 
Result so far: 19875.282945
If we subtract 1290 from 1480, we get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Let's proceed to step 14:
If we divide 1900 by 258, we get 7 and a remainder of 94.
Put 7 as the next digit of the answer. 
Result so far: 19875.2829457
The remainder is 94 after subtracting 1806 from 1900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Moving on to step 15:
If we divide 940 by 258, we get 3 and a remainder of 166.
Put 3 as the next digit of the answer. 
Result so far: 19875.28294573
If we take 774 away from 940, we end up with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

The final outcome is 19875.28294573, with a leftover of 1.66e-07.