Let's divide 311921 by 19
The aim is to understand the frequency of 19 in 311921.

Advancing to step 1:
19 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 19

Advancing to step 2:
19 goes into 31 1 times with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 12 after subtracting 19 from 31.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 19

On to step 3:
The number 19 fits into 121 6 times, leaving a remainder of 7.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
If we subtract 114 from 121, we get 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 19

Let's proceed to step 4:
79 divided by 19 is 4 with a remainder of 3.
Record the quotient 4 as the next digit in the result. 
Result so far: 164.0
Subtract 76 from 79 to get 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 19

On to step 5:
19 can be fit into 32 1 times, resulting in a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 1641.0
If we subtract 19 from 32, we get 13.
Include the next digit (1) from the dividend after 13, then repeat: 131 / 19

Going ahead to step 6:
The number 19 fits into 131 6 times, leaving a remainder of 17.
The number 6 becomes the next digit in our result. 
Result so far: 16416.0
Subtract 114 from 131 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 7:
If we divide 170 by 19, we get 8 and a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 16416.8
If we take 152 away from 170, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 8:
180 divided by 19 is 9 with a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 16416.89
Subtracting 171 from 180 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 9:
The number 19 fits into 90 4 times, leaving a remainder of 14.
The number 4 becomes the next digit in our result. 
Result so far: 16416.894
Subtract 76 from 90 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 10:
19 goes into 140 7 times with a remainder of 7.
The next digit of our result is 7. 
Result so far: 16416.8947
Deduct 133 from 140 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 11:
19 goes into 70 3 times with a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 16416.89473
The remainder is 13 after subtracting 57 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 12:
19 goes into 130 6 times with a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 16416.894736
Deduct 114 from 130 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 13:
When dividing 160 by 19, we get 8 with a remainder of 8.
The next digit of our result is 8. 
Result so far: 16416.8947368
Deduct 152 from 160 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 14:
When dividing 80 by 19, we get 4 with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 16416.89473684
The remainder is 4 after subtracting 76 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 16416.89473684 and a remainder of 4e-09.