Let's divide 81721516 by 279
The aim is to understand the frequency of 279 in 81721516.

Going ahead to step 1:
8 divided by 279 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 279

Going ahead to step 2:
279 can be fit into 81 0 times, resulting in a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Append the next digit (7) from the dividend to 81 and continue with: 817 / 279

Going ahead to step 3:
If we divide 817 by 279, we get 2 and a remainder of 259.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 259 after subtracting 558 from 817.
Append the next digit (2) from the dividend to 259 and continue with: 2592 / 279

Moving on to step 4:
The number 279 fits into 2592 9 times, leaving a remainder of 81.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
Deduct 2511 from 2592 and we're left with 81.
Append the next digit (1) from the dividend to 81 and continue with: 811 / 279

Going ahead to step 5:
The number 279 fits into 811 2 times, leaving a remainder of 253.
Write down 2 as next digit of the result. 
Result so far: 292.0
Subtracting 558 from 811 leaves us with 253.
Take the next digit (5) from the dividend and append it to 253, then repeat: 2535 / 279

Step 6:
If we divide 2535 by 279, we get 9 and a remainder of 24.
Use 9 as the next digit of our solution. 
Result so far: 2929.0
Subtracting 2511 from 2535 leaves us with 24.
Fetch the next digit (1) from the dividend, attach it to 24 and continue: 241 / 279

Let's proceed to step 7:
279 can be fit into 241 0 times, resulting in a remainder of 241.
Use 0 as the next digit of our solution. 
Result so far: 29290.0
If we take 0 away from 241, we end up with 241.
Include the next digit (6) from the dividend after 241, then repeat: 2416 / 279

Let's proceed to step 8:
2416 divided by 279 is 8 with a remainder of 184.
Record the quotient 8 as the next digit in the result. 
Result so far: 292908.0
If we take 2232 away from 2416, we end up with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Moving on to step 9:
If we divide 1840 by 279, we get 6 and a remainder of 166.
The number 6 becomes the next digit in our result. 
Result so far: 292908.6
Deduct 1674 from 1840 and we're left with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Moving on to step 10:
279 can be fit into 1660 5 times, resulting in a remainder of 265.
Record the quotient 5 as the next digit in the result. 
Result so far: 292908.65
Subtract 1395 from 1660 to get 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Let's proceed to step 11:
279 can be fit into 2650 9 times, resulting in a remainder of 139.
Record the quotient 9 as the next digit in the result. 
Result so far: 292908.659
The remainder is 139 after subtracting 2511 from 2650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

Going ahead to step 12:
1390 divided by 279 is 4 with a remainder of 274.
Record the quotient 4 as the next digit in the result. 
Result so far: 292908.6594
If we subtract 1116 from 1390, we get 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

On to step 13:
If we divide 2740 by 279, we get 9 and a remainder of 229.
The next digit of our result is 9. 
Result so far: 292908.65949
Subtract 2511 from 2740 to get 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

Advancing to step 14:
If we divide 2290 by 279, we get 8 and a remainder of 58.
Put 8 as the next digit of the answer. 
Result so far: 292908.659498
Subtract 2232 from 2290 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 15:
279 goes into 580 2 times with a remainder of 22.
Record the quotient 2 as the next digit in the result. 
Result so far: 292908.6594982
Subtract 558 from 580 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 16:
220 divided by 279 is 0 with a remainder of 220.
Use 0 as the next digit of our solution. 
Result so far: 292908.6594982
Subtracting 0 from 220 leaves us 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.

In conclusion, the division gives 292908.6594982 with a balance of 2.2e-07.