We're dividing 18058758 by 809 
The aim is to understand the frequency of 809 in 18058758.

Step 1:
The number 809 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 809

Step 2:
The number 809 fits into 18 0 times, leaving a remainder of 18.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 18, we end up with 18.
Grab the next digit (0) from the dividend, add it to 18, then carry on: 180 / 809

On to step 3:
809 can be fit into 180 0 times, resulting in a remainder of 180.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 180, we get 180.
Append the next digit (5) from the dividend to 180 and continue with: 1805 / 809

On to step 4:
809 goes into 1805 2 times with a remainder of 187.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 1618 from 1805 to get 187.
Append the next digit (8) from the dividend to 187 and continue with: 1878 / 809

Advancing to step 5:
When dividing 1878 by 809, we get 2 with a remainder of 260.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
If we take 1618 away from 1878, we end up with 260.
Include the next digit (7) from the dividend after 260, then repeat: 2607 / 809

On to step 6:
809 can be fit into 2607 3 times, resulting in a remainder of 180.
Record the quotient 3 as the next digit in the result. 
Result so far: 223.0
Deduct 2427 from 2607 and we're left with 180.
Take the next digit (5) from the dividend and append it to 180, then repeat: 1805 / 809

Step 7:
When dividing 1805 by 809, we get 2 with a remainder of 187.
Use 2 as the next digit of our solution. 
Result so far: 2232.0
Deduct 1618 from 1805 and we're left with 187.
Bring next digit (8) of the dividend behind the 187 and repeat the process: 1878 / 809

Moving on to step 8:
If we divide 1878 by 809, we get 2 and a remainder of 260.
Record the quotient 2 as the next digit in the result. 
Result so far: 22322.0
Subtract 1618 from 1878 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Let's proceed to step 9:
When dividing 2600 by 809, we get 3 with a remainder of 173.
Record the quotient 3 as the next digit in the result. 
Result so far: 22322.3
Subtracting 2427 from 2600 leaves us with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Going ahead to step 10:
If we divide 1730 by 809, we get 2 and a remainder of 112.
The next digit of our result is 2. 
Result so far: 22322.32
If we subtract 1618 from 1730, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Advancing to step 11:
1120 divided by 809 is 1 with a remainder of 311.
Use 1 as the next digit of our solution. 
Result so far: 22322.321
Subtract 809 from 1120 to get 311.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3110, and continue the process.

Step 12:
809 goes into 3110 3 times with a remainder of 683.
Write down 3 as next digit of the result. 
Result so far: 22322.3213
If we take 2427 away from 3110, we end up with 683.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6830, and continue the process.

Moving on to step 13:
809 goes into 6830 8 times with a remainder of 358.
Use 8 as the next digit of our solution. 
Result so far: 22322.32138
The remainder is 358 after subtracting 6472 from 6830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

Going ahead to step 14:
809 can be fit into 3580 4 times, resulting in a remainder of 344.
Put 4 as the next digit of the answer. 
Result so far: 22322.321384
Deduct 3236 from 3580 and we're left with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

On to step 15:
3440 divided by 809 is 4 with a remainder of 204.
The number 4 becomes the next digit in our result. 
Result so far: 22322.3213844
Subtracting 3236 from 3440 leaves us with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

After the division, we end up with 22322.3213844 and a remainder of 2.04e-06.