5866099 ÷ 817 
The aim is to understand the frequency of 817 in 5866099.

Advancing to step 1:
5 divided by 817 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 817

Advancing to step 2:
58 divided by 817 is 0 with a remainder of 58.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 58 and we're left with 58.
Grab the next digit (6) from the dividend, add it to 58, then carry on: 586 / 817

On to step 3:
If we divide 586 by 817, we get 0 and a remainder of 586.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 586 and we're left with 586.
Fetch the next digit (6) from the dividend, attach it to 586 and continue: 5866 / 817

On to step 4:
If we divide 5866 by 817, we get 7 and a remainder of 147.
The next digit of our result is 7. 
Result so far: 7.0
Subtracting 5719 from 5866 leaves us with 147.
Append the next digit (0) from the dividend to 147 and continue with: 1470 / 817

Let's proceed to step 5:
817 goes into 1470 1 times with a remainder of 653.
The number 1 becomes the next digit in our result. 
Result so far: 71.0
The remainder is 653 after subtracting 817 from 1470.
Take the next digit (9) from the dividend and append it to 653, then repeat: 6539 / 817

Let's proceed to step 6:
When dividing 6539 by 817, we get 8 with a remainder of 3.
Use 8 as the next digit of our solution. 
Result so far: 718.0
Deduct 6536 from 6539 and we're left with 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 817

On to step 7:
When dividing 39 by 817, we get 0 with a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 7180.0
Subtract 0 from 39 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 8:
The number 817 fits into 390 0 times, leaving a remainder of 390.
Put 0 as the next digit of the answer. 
Result so far: 7180.0
If we subtract 0 from 390, we get 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

On to step 9:
817 can be fit into 3900 4 times, resulting in a remainder of 632.
Put 4 as the next digit of the answer. 
Result so far: 7180.04
The remainder is 632 after subtracting 3268 from 3900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

Moving on to step 10:
If we divide 6320 by 817, we get 7 and a remainder of 601.
The next digit of our result is 7. 
Result so far: 7180.047
Subtracting 5719 from 6320 leaves us with 601.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6010, and continue the process.

Advancing to step 11:
6010 divided by 817 is 7 with a remainder of 291.
Put 7 as the next digit of the answer. 
Result so far: 7180.0477
Subtract 5719 from 6010 to get 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

The final outcome is 7180.0477, with a leftover of 0.00291.