We look at the division of 19186509 by 247 
The aim is to understand the frequency of 247 in 19186509.

On to step 1:
When dividing 1 by 247, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 247

Step 2:
247 goes into 19 0 times with a remainder of 19.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 19 leaves us with 19.
Include the next digit (1) from the dividend after 19, then repeat: 191 / 247

Advancing to step 3:
247 can be fit into 191 0 times, resulting in a remainder of 191.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 191 leaves us with 191.
Append the next digit (8) from the dividend to 191 and continue with: 1918 / 247

Going ahead to step 4:
247 can be fit into 1918 7 times, resulting in a remainder of 189.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
The remainder is 189 after subtracting 1729 from 1918.
Grab the next digit (6) from the dividend, add it to 189, then carry on: 1896 / 247

Step 5:
The number 247 fits into 1896 7 times, leaving a remainder of 167.
Record the quotient 7 as the next digit in the result. 
Result so far: 77.0
If we take 1729 away from 1896, we end up with 167.
Fetch the next digit (5) from the dividend, attach it to 167 and continue: 1675 / 247

On to step 6:
1675 divided by 247 is 6 with a remainder of 193.
Record the quotient 6 as the next digit in the result. 
Result so far: 776.0
The remainder is 193 after subtracting 1482 from 1675.
Append the next digit (0) from the dividend to 193 and continue with: 1930 / 247

On to step 7:
The number 247 fits into 1930 7 times, leaving a remainder of 201.
Write down 7 as next digit of the result. 
Result so far: 7767.0
Subtracting 1729 from 1930 leaves us with 201.
Fetch the next digit (9) from the dividend, attach it to 201 and continue: 2019 / 247

Going ahead to step 8:
247 can be fit into 2019 8 times, resulting in a remainder of 43.
Put 8 as the next digit of the answer. 
Result so far: 77678.0
Deduct 1976 from 2019 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 9:
247 goes into 430 1 times with a remainder of 183.
Write down 1 as next digit of the result. 
Result so far: 77678.1
Subtracting 247 from 430 leaves us with 183.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1830, and continue the process.

Advancing to step 10:
The number 247 fits into 1830 7 times, leaving a remainder of 101.
Record the quotient 7 as the next digit in the result. 
Result so far: 77678.17
If we subtract 1729 from 1830, we get 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Moving on to step 11:
When dividing 1010 by 247, we get 4 with a remainder of 22.
The next digit of our result is 4. 
Result so far: 77678.174
Subtracting 988 from 1010 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 12:
247 goes into 220 0 times with a remainder of 220.
The number 0 becomes the next digit in our result. 
Result so far: 77678.174
Deduct 0 from 220 and we're left with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Step 13:
247 goes into 2200 8 times with a remainder of 224.
The next digit of our result is 8. 
Result so far: 77678.17408
Subtract 1976 from 2200 to get 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Moving on to step 14:
247 can be fit into 2240 9 times, resulting in a remainder of 17.
Write down 9 as next digit of the result. 
Result so far: 77678.174089
Deduct 2223 from 2240 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 15:
247 can be fit into 170 0 times, resulting in a remainder of 170.
Use 0 as the next digit of our solution. 
Result so far: 77678.174089
If we subtract 0 from 170, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Moving on to step 16:
247 can be fit into 1700 6 times, resulting in a remainder of 218.
The number 6 becomes the next digit in our result. 
Result so far: 77678.17408906
If we take 1482 away from 1700, we end up with 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

The quotient of the division is 77678.17408906, and the remainder is 2.18e-07.