We're dividing 18644184 by 866 
The aim is to understand the frequency of 866 in 18644184.

Step 1:
866 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 866

Advancing to step 2:
When dividing 18 by 866, we get 0 with a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 18 to get 18.
Take the next digit (6) from the dividend and append it to 18, then repeat: 186 / 866

Going ahead to step 3:
866 goes into 186 0 times with a remainder of 186.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 186 leaves us with 186.
Take the next digit (4) from the dividend and append it to 186, then repeat: 1864 / 866

Advancing to step 4:
When dividing 1864 by 866, we get 2 with a remainder of 132.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 1732 from 1864, we get 132.
Bring next digit (4) of the dividend behind the 132 and repeat the process: 1324 / 866

Let's proceed to step 5:
866 can be fit into 1324 1 times, resulting in a remainder of 458.
Put 1 as the next digit of the answer. 
Result so far: 21.0
If we take 866 away from 1324, we end up with 458.
Bring next digit (1) of the dividend behind the 458 and repeat the process: 4581 / 866

Step 6:
If we divide 4581 by 866, we get 5 and a remainder of 251.
The next digit of our result is 5. 
Result so far: 215.0
Subtracting 4330 from 4581 leaves us with 251.
Include the next digit (8) from the dividend after 251, then repeat: 2518 / 866

Going ahead to step 7:
866 goes into 2518 2 times with a remainder of 786.
Record the quotient 2 as the next digit in the result. 
Result so far: 2152.0
Subtract 1732 from 2518 to get 786.
Append the next digit (4) from the dividend to 786 and continue with: 7864 / 866

On to step 8:
866 goes into 7864 9 times with a remainder of 70.
Record the quotient 9 as the next digit in the result. 
Result so far: 21529.0
Deduct 7794 from 7864 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 9:
866 can be fit into 700 0 times, resulting in a remainder of 700.
Record the quotient 0 as the next digit in the result. 
Result so far: 21529.0
Subtract 0 from 700 to get 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Let's proceed to step 10:
When dividing 7000 by 866, we get 8 with a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 21529.08
If we subtract 6928 from 7000, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 11:
866 goes into 720 0 times with a remainder of 720.
The next digit of our result is 0. 
Result so far: 21529.08
The remainder is 720 after subtracting 0 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

On to step 12:
866 can be fit into 7200 8 times, resulting in a remainder of 272.
The next digit of our result is 8. 
Result so far: 21529.0808
Subtracting 6928 from 7200 leaves us with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Going ahead to step 13:
866 goes into 2720 3 times with a remainder of 122.
The next digit of our result is 3. 
Result so far: 21529.08083
The remainder is 122 after subtracting 2598 from 2720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Going ahead to step 14:
866 goes into 1220 1 times with a remainder of 354.
Put 1 as the next digit of the answer. 
Result so far: 21529.080831
Subtracting 866 from 1220 leaves us with 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Step 15:
The number 866 fits into 3540 4 times, leaving a remainder of 76.
Use 4 as the next digit of our solution. 
Result so far: 21529.0808314
Subtract 3464 from 3540 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 16:
If we divide 760 by 866, we get 0 and a remainder of 760.
Put 0 as the next digit of the answer. 
Result so far: 21529.0808314
If we subtract 0 from 760, we get 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

The final result is 21529.0808314 with a remainder of 7.6e-07.