4342839 ÷ 125 
The aim is to understand the frequency of 125 in 4342839.

Advancing to step 1:
The number 125 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 125

Going ahead to step 2:
The number 125 fits into 43 0 times, leaving a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Bring next digit (4) of the dividend behind the 43 and repeat the process: 434 / 125

Advancing to step 3:
When dividing 434 by 125, we get 3 with a remainder of 59.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 375 from 434, we get 59.
Bring next digit (2) of the dividend behind the 59 and repeat the process: 592 / 125

Moving on to step 4:
When dividing 592 by 125, we get 4 with a remainder of 92.
Write down 4 as next digit of the result. 
Result so far: 34.0
If we subtract 500 from 592, we get 92.
Take the next digit (8) from the dividend and append it to 92, then repeat: 928 / 125

Moving on to step 5:
If we divide 928 by 125, we get 7 and a remainder of 53.
The number 7 becomes the next digit in our result. 
Result so far: 347.0
Subtracting 875 from 928 leaves us with 53.
Take the next digit (3) from the dividend and append it to 53, then repeat: 533 / 125

Going ahead to step 6:
125 can be fit into 533 4 times, resulting in a remainder of 33.
Write down 4 as next digit of the result. 
Result so far: 3474.0
The remainder is 33 after subtracting 500 from 533.
Bring next digit (9) of the dividend behind the 33 and repeat the process: 339 / 125

Let's proceed to step 7:
When dividing 339 by 125, we get 2 with a remainder of 89.
Write down 2 as next digit of the result. 
Result so far: 34742.0
Subtract 250 from 339 to get 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Moving on to step 8:
The number 125 fits into 890 7 times, leaving a remainder of 15.
Record the quotient 7 as the next digit in the result. 
Result so far: 34742.7
Subtracting 875 from 890 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 9:
150 divided by 125 is 1 with a remainder of 25.
Use 1 as the next digit of our solution. 
Result so far: 34742.71
Subtracting 125 from 150 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 10:
250 divided by 125 is 2 with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 34742.712
Subtract 250 from 250 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 11:
If we divide 0 by 125, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 34742.712
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 12:
If we divide 0 by 125, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 34742.712
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 34742.712 with a remaining 0.0.