We're dividing 15842216 by 125 
The aim is to understand the frequency of 125 in 15842216.

Going ahead to step 1:
If we divide 1 by 125, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 125

Moving on to step 2:
The number 125 fits into 15 0 times, leaving a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Include the next digit (8) from the dividend after 15, then repeat: 158 / 125

Step 3:
158 divided by 125 is 1 with a remainder of 33.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 33 after subtracting 125 from 158.
Bring next digit (4) of the dividend behind the 33 and repeat the process: 334 / 125

Advancing to step 4:
If we divide 334 by 125, we get 2 and a remainder of 84.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we subtract 250 from 334, we get 84.
Take the next digit (2) from the dividend and append it to 84, then repeat: 842 / 125

Moving on to step 5:
125 goes into 842 6 times with a remainder of 92.
Use 6 as the next digit of our solution. 
Result so far: 126.0
The remainder is 92 after subtracting 750 from 842.
Take the next digit (2) from the dividend and append it to 92, then repeat: 922 / 125

Going ahead to step 6:
922 divided by 125 is 7 with a remainder of 47.
Put 7 as the next digit of the answer. 
Result so far: 1267.0
If we subtract 875 from 922, we get 47.
Bring next digit (1) of the dividend behind the 47 and repeat the process: 471 / 125

On to step 7:
125 goes into 471 3 times with a remainder of 96.
The next digit of our result is 3. 
Result so far: 12673.0
Subtract 375 from 471 to get 96.
Take the next digit (6) from the dividend and append it to 96, then repeat: 966 / 125

Going ahead to step 8:
If we divide 966 by 125, we get 7 and a remainder of 91.
Record the quotient 7 as the next digit in the result. 
Result so far: 126737.0
If we take 875 away from 966, we end up with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

On to step 9:
910 divided by 125 is 7 with a remainder of 35.
The next digit of our result is 7. 
Result so far: 126737.7
Subtracting 875 from 910 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 10:
The number 125 fits into 350 2 times, leaving a remainder of 100.
Use 2 as the next digit of our solution. 
Result so far: 126737.72
If we take 250 away from 350, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 11:
When dividing 1000 by 125, we get 8 with a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 126737.728
Deduct 1000 from 1000 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.

Step 12:
The number 125 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 126737.728
Subtract 0 from 0 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.

Moving on to step 13:
0 divided by 125 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 126737.728
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 126737.728 with a remainder of 0.0.