We divide 18223395 by 809
The aim is to understand the frequency of 809 in 18223395.

Step 1:
When dividing 1 by 809, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 809

Advancing to step 2:
If we divide 18 by 809, we get 0 and a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 18, we end up with 18.
Append the next digit (2) from the dividend to 18 and continue with: 182 / 809

On to step 3:
When dividing 182 by 809, we get 0 with a remainder of 182.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 182, we get 182.
Append the next digit (2) from the dividend to 182 and continue with: 1822 / 809

Moving on to step 4:
809 can be fit into 1822 2 times, resulting in a remainder of 204.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 1618 from 1822 and we're left with 204.
Include the next digit (3) from the dividend after 204, then repeat: 2043 / 809

Moving on to step 5:
809 can be fit into 2043 2 times, resulting in a remainder of 425.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
If we subtract 1618 from 2043, we get 425.
Append the next digit (3) from the dividend to 425 and continue with: 4253 / 809

Let's proceed to step 6:
809 goes into 4253 5 times with a remainder of 208.
The next digit of our result is 5. 
Result so far: 225.0
If we take 4045 away from 4253, we end up with 208.
Bring next digit (9) of the dividend behind the 208 and repeat the process: 2089 / 809

On to step 7:
809 goes into 2089 2 times with a remainder of 471.
The next digit of our result is 2. 
Result so far: 2252.0
Subtract 1618 from 2089 to get 471.
Grab the next digit (5) from the dividend, add it to 471, then carry on: 4715 / 809

Advancing to step 8:
The number 809 fits into 4715 5 times, leaving a remainder of 670.
Put 5 as the next digit of the answer. 
Result so far: 22525.0
Subtracting 4045 from 4715 leaves us with 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6700, and continue the process.

Step 9:
When dividing 6700 by 809, we get 8 with a remainder of 228.
Use 8 as the next digit of our solution. 
Result so far: 22525.8
The remainder is 228 after subtracting 6472 from 6700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Moving on to step 10:
809 goes into 2280 2 times with a remainder of 662.
The next digit of our result is 2. 
Result so far: 22525.82
Subtracting 1618 from 2280 leaves us with 662.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6620, and continue the process.

Going ahead to step 11:
809 goes into 6620 8 times with a remainder of 148.
Record the quotient 8 as the next digit in the result. 
Result so far: 22525.828
If we take 6472 away from 6620, we end up with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Going ahead to step 12:
1480 divided by 809 is 1 with a remainder of 671.
Record the quotient 1 as the next digit in the result. 
Result so far: 22525.8281
Subtract 809 from 1480 to get 671.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6710, and continue the process.

Advancing to step 13:
809 can be fit into 6710 8 times, resulting in a remainder of 238.
Put 8 as the next digit of the answer. 
Result so far: 22525.82818
If we subtract 6472 from 6710, we get 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Advancing to step 14:
If we divide 2380 by 809, we get 2 and a remainder of 762.
The number 2 becomes the next digit in our result. 
Result so far: 22525.828182
If we subtract 1618 from 2380, we get 762.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7620, and continue the process.

Going ahead to step 15:
The number 809 fits into 7620 9 times, leaving a remainder of 339.
The number 9 becomes the next digit in our result. 
Result so far: 22525.8281829
If we take 7281 away from 7620, we end up with 339.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3390, and continue the process.

Going ahead to step 16:
If we divide 3390 by 809, we get 4 and a remainder of 154.
Record the quotient 4 as the next digit in the result. 
Result so far: 22525.82818294
If we take 3236 away from 3390, we end up with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

After the division, we end up with 22525.82818294 and a remainder of 1.54e-07.