18947528 divided by 391 
The aim is to understand the frequency of 391 in 18947528.

Moving on to step 1:
1 divided by 391 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 391

Advancing to step 2:
18 divided by 391 is 0 with a remainder of 18.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 18 after subtracting 0 from 18.
Take the next digit (9) from the dividend and append it to 18, then repeat: 189 / 391

Advancing to step 3:
189 divided by 391 is 0 with a remainder of 189.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 189 after subtracting 0 from 189.
Bring next digit (4) of the dividend behind the 189 and repeat the process: 1894 / 391

On to step 4:
391 goes into 1894 4 times with a remainder of 330.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 1564 from 1894 and we're left with 330.
Include the next digit (7) from the dividend after 330, then repeat: 3307 / 391

On to step 5:
When dividing 3307 by 391, we get 8 with a remainder of 179.
Record the quotient 8 as the next digit in the result. 
Result so far: 48.0
Deduct 3128 from 3307 and we're left with 179.
Include the next digit (5) from the dividend after 179, then repeat: 1795 / 391

Let's proceed to step 6:
When dividing 1795 by 391, we get 4 with a remainder of 231.
The number 4 becomes the next digit in our result. 
Result so far: 484.0
Subtract 1564 from 1795 to get 231.
Grab the next digit (2) from the dividend, add it to 231, then carry on: 2312 / 391

Advancing to step 7:
If we divide 2312 by 391, we get 5 and a remainder of 357.
Record the quotient 5 as the next digit in the result. 
Result so far: 4845.0
Deduct 1955 from 2312 and we're left with 357.
Fetch the next digit (8) from the dividend, attach it to 357 and continue: 3578 / 391

On to step 8:
391 can be fit into 3578 9 times, resulting in a remainder of 59.
The next digit of our result is 9. 
Result so far: 48459.0
Subtract 3519 from 3578 to get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 9:
590 divided by 391 is 1 with a remainder of 199.
Write down 1 as next digit of the result. 
Result so far: 48459.1
If we subtract 391 from 590, we get 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Step 10:
391 can be fit into 1990 5 times, resulting in a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 48459.15
If we take 1955 away from 1990, we end up 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.

Step 11:
391 goes into 350 0 times with a remainder of 350.
Record the quotient 0 as the next digit in the result. 
Result so far: 48459.15
The remainder is 350 after subtracting 0 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Let's proceed to step 12:
3500 divided by 391 is 8 with a remainder of 372.
Record the quotient 8 as the next digit in the result. 
Result so far: 48459.1508
If we take 3128 away from 3500, we end up with 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Moving on to step 13:
When dividing 3720 by 391, we get 9 with a remainder of 201.
Write down 9 as next digit of the result. 
Result so far: 48459.15089
If we subtract 3519 from 3720, we get 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

On to step 14:
391 goes into 2010 5 times with a remainder of 55.
The number 5 becomes the next digit in our result. 
Result so far: 48459.150895
If we take 1955 away from 2010, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 15:
The number 391 fits into 550 1 times, leaving a remainder of 159.
Record the quotient 1 as the next digit in the result. 
Result so far: 48459.1508951
If we take 391 away from 550, we end up with 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Going ahead to step 16:
391 can be fit into 1590 4 times, resulting in a remainder of 26.
The next digit of our result is 4. 
Result so far: 48459.15089514
Subtracting 1564 from 1590 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

After the division, we end up with 48459.15089514 and a remainder of 2.6e-08.