We look at the division of 344358 by 19 
The aim is to understand the frequency of 19 in 344358.

Let's proceed to step 1:
When dividing 3 by 19, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 19

On to step 2:
34 divided by 19 is 1 with a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 19 from 34 and we're left with 15.
Append the next digit (4) from the dividend to 15 and continue with: 154 / 19

Advancing to step 3:
19 can be fit into 154 8 times, resulting in a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 18.0
If we subtract 152 from 154, we get 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 19

On to step 4:
The number 19 fits into 23 1 times, leaving a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 181.0
Subtract 19 from 23 to get 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 19

Let's proceed to step 5:
The number 19 fits into 45 2 times, leaving a remainder of 7.
The next digit of our result is 2. 
Result so far: 1812.0
Subtract 38 from 45 to get 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 19

Advancing to step 6:
If we divide 78 by 19, we get 4 and a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 18124.0
If we take 76 away from 78, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 7:
When dividing 20 by 19, we get 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 18124.1
Subtract 19 from 20 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 8:
If we divide 10 by 19, we get 0 and a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 18124.1
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
19 goes into 100 5 times with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 18124.105
The remainder is 5 after subtracting 95 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 10:
If we divide 50 by 19, we get 2 and a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 18124.1052
Subtract 38 from 50 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
If we divide 120 by 19, we get 6 and a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 18124.10526
Subtracting 114 from 120 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 12:
If we divide 60 by 19, we get 3 and a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 18124.105263
Subtracting 57 from 60 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 13:
30 divided by 19 is 1 with a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 18124.1052631
Subtract 19 from 30 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 14:
19 can be fit into 110 5 times, resulting in a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 18124.10526315
The remainder is 15 after subtracting 95 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Our division results in 18124.10526315 with a remaining 1.5e-08.