15489389 divided by 817 
The aim is to understand the frequency of 817 in 15489389.

Going ahead to step 1:
When dividing 1 by 817, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 817

Let's proceed to step 2:
The number 817 fits into 15 0 times, leaving a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Take the next digit (4) from the dividend and append it to 15, then repeat: 154 / 817

Moving on to step 3:
817 goes into 154 0 times with a remainder of 154.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 154, we get 154.
Take the next digit (8) from the dividend and append it to 154, then repeat: 1548 / 817

Moving on to step 4:
1548 divided by 817 is 1 with a remainder of 731.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 817 from 1548 to get 731.
Append the next digit (9) from the dividend to 731 and continue with: 7319 / 817

Step 5:
The number 817 fits into 7319 8 times, leaving a remainder of 783.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Subtract 6536 from 7319 to get 783.
Append the next digit (3) from the dividend to 783 and continue with: 7833 / 817

Going ahead to step 6:
817 goes into 7833 9 times with a remainder of 480.
The next digit of our result is 9. 
Result so far: 189.0
If we subtract 7353 from 7833, we get 480.
Include the next digit (8) from the dividend after 480, then repeat: 4808 / 817

Step 7:
817 goes into 4808 5 times with a remainder of 723.
Use 5 as the next digit of our solution. 
Result so far: 1895.0
Subtracting 4085 from 4808 leaves us with 723.
Take the next digit (9) from the dividend and append it to 723, then repeat: 7239 / 817

On to step 8:
If we divide 7239 by 817, we get 8 and a remainder of 703.
The next digit of our result is 8. 
Result so far: 18958.0
If we subtract 6536 from 7239, we get 703.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7030, and continue the process.

Going ahead to step 9:
7030 divided by 817 is 8 with a remainder of 494.
The number 8 becomes the next digit in our result. 
Result so far: 18958.8
The remainder is 494 after subtracting 6536 from 7030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

Step 10:
4940 divided by 817 is 6 with a remainder of 38.
The next digit of our result is 6. 
Result so far: 18958.86
Subtracting 4902 from 4940 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 11:
When dividing 380 by 817, we get 0 with a remainder of 380.
The next digit of our result is 0. 
Result so far: 18958.86
Subtract 0 from 380 to get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Advancing to step 12:
3800 divided by 817 is 4 with a remainder of 532.
The next digit of our result is 4. 
Result so far: 18958.8604
Deduct 3268 from 3800 and we're left with 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Let's proceed to step 13:
If we divide 5320 by 817, we get 6 and a remainder of 418.
Put 6 as the next digit of the answer. 
Result so far: 18958.86046
The remainder is 418 after subtracting 4902 from 5320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4180, and continue the process.

Advancing to step 14:
When dividing 4180 by 817, we get 5 with a remainder of 95.
The number 5 becomes the next digit in our result. 
Result so far: 18958.860465
Subtracting 4085 from 4180 leaves us with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Let's proceed to step 15:
817 can be fit into 950 1 times, resulting in a remainder of 133.
Put 1 as the next digit of the answer. 
Result so far: 18958.8604651
Subtracting 817 from 950 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 16:
817 can be fit into 1330 1 times, resulting in a remainder of 513.
Use 1 as the next digit of our solution. 
Result so far: 18958.86046511
Subtract 817 from 1330 to get 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

After the division, we end up with 18958.86046511 and a remainder of 5.13e-07.