We look at the division of 210808 by 219 
The aim is to understand the frequency of 219 in 210808.

Advancing to step 1:
219 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 219

Moving on to step 2:
21 divided by 219 is 0 with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Bring next digit (0) of the dividend behind the 21 and repeat the process: 210 / 219

Moving on to step 3:
210 divided by 219 is 0 with a remainder of 210.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 210, we end up with 210.
Append the next digit (8) from the dividend to 210 and continue with: 2108 / 219

Advancing to step 4:
If we divide 2108 by 219, we get 9 and a remainder of 137.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Deduct 1971 from 2108 and we're left with 137.
Take the next digit (0) from the dividend and append it to 137, then repeat: 1370 / 219

On to step 5:
If we divide 1370 by 219, we get 6 and a remainder of 56.
Record the quotient 6 as the next digit in the result. 
Result so far: 96.0
If we subtract 1314 from 1370, we get 56.
Grab the next digit (8) from the dividend, add it to 56, then carry on: 568 / 219

Step 6:
219 goes into 568 2 times with a remainder of 130.
Record the quotient 2 as the next digit in the result. 
Result so far: 962.0
Deduct 438 from 568 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

On to step 7:
1300 divided by 219 is 5 with a remainder of 205.
The number 5 becomes the next digit in our result. 
Result so far: 962.5
The remainder is 205 after subtracting 1095 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Going ahead to step 8:
219 goes into 2050 9 times with a remainder of 79.
The next digit of our result is 9. 
Result so far: 962.59
Subtracting 1971 from 2050 leaves us with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Advancing to step 9:
If we divide 790 by 219, we get 3 and a remainder of 133.
The number 3 becomes the next digit in our result. 
Result so far: 962.593
Subtracting 657 from 790 leaves us with 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

On to step 10:
The number 219 fits into 1330 6 times, leaving a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 962.5936
If we take 1314 away from 1330, we end up 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.

Going ahead to step 11:
160 divided by 219 is 0 with a remainder of 160.
Put 0 as the next digit of the answer. 
Result so far: 962.5936
Subtract 0 from 160 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 12:
219 can be fit into 1600 7 times, resulting in a remainder of 67.
Use 7 as the next digit of our solution. 
Result so far: 962.593607
The remainder is 67 after subtracting 1533 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 13:
When dividing 670 by 219, we get 3 with a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 962.5936073
The remainder is 13 after subtracting 657 from 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 14:
If we divide 130 by 219, we get 0 and a remainder of 130.
Put 0 as the next digit of the answer. 
Result so far: 962.5936073
Subtract 0 from 130 to get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

The quotient of the division is 962.5936073, and the remainder is 1.3e-07.