Let's divide 7863909 by 258
The aim is to understand the frequency of 258 in 7863909.

Step 1:
The number 258 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 258

Moving on to step 2:
258 can be fit into 78 0 times, resulting in a remainder of 78.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 78, we get 78.
Bring next digit (6) of the dividend behind the 78 and repeat the process: 786 / 258

Let's proceed to step 3:
The number 258 fits into 786 3 times, leaving a remainder of 12.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtracting 774 from 786 leaves us with 12.
Append the next digit (3) from the dividend to 12 and continue with: 123 / 258

Advancing to step 4:
When dividing 123 by 258, we get 0 with a remainder of 123.
The number 0 becomes the next digit in our result. 
Result so far: 30.0
Subtracting 0 from 123 leaves us with 123.
Bring next digit (9) of the dividend behind the 123 and repeat the process: 1239 / 258

On to step 5:
258 can be fit into 1239 4 times, resulting in a remainder of 207.
Use 4 as the next digit of our solution. 
Result so far: 304.0
Deduct 1032 from 1239 and we're left with 207.
Bring next digit (0) of the dividend behind the 207 and repeat the process: 2070 / 258

Going ahead to step 6:
The number 258 fits into 2070 8 times, leaving a remainder of 6.
The next digit of our result is 8. 
Result so far: 3048.0
If we subtract 2064 from 2070, we get 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 258

On to step 7:
If we divide 69 by 258, we get 0 and a remainder of 69.
The next digit of our result is 0. 
Result so far: 30480.0
The remainder is 69 after subtracting 0 from 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 8:
690 divided by 258 is 2 with a remainder of 174.
Use 2 as the next digit of our solution. 
Result so far: 30480.2
Deduct 516 from 690 and we're left with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Let's proceed to step 9:
258 goes into 1740 6 times with a remainder of 192.
Put 6 as the next digit of the answer. 
Result so far: 30480.26
Subtract 1548 from 1740 to get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Moving on to step 10:
The number 258 fits into 1920 7 times, leaving a remainder of 114.
The next digit of our result is 7. 
Result so far: 30480.267
Subtract 1806 from 1920 to get 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Let's proceed to step 11:
When dividing 1140 by 258, we get 4 with a remainder of 108.
Use 4 as the next digit of our solution. 
Result so far: 30480.2674
The remainder is 108 after subtracting 1032 from 1140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

On to step 12:
1080 divided by 258 is 4 with a remainder of 48.
Write down 4 as next digit of the result. 
Result so far: 30480.26744
The remainder is 48 after subtracting 1032 from 1080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The quotient of the division is 30480.26744, and the remainder is 4.8e-05.