We divide 19668405 by 223
The aim is to understand the frequency of 223 in 19668405.

On to step 1:
223 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 223

On to step 2:
The number 223 fits into 19 0 times, leaving a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 19, we end up with 19.
Grab the next digit (6) from the dividend, add it to 19, then carry on: 196 / 223

On to step 3:
196 divided by 223 is 0 with a remainder of 196.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 196, we get 196.
Include the next digit (6) from the dividend after 196, then repeat: 1966 / 223

Advancing to step 4:
1966 divided by 223 is 8 with a remainder of 182.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 1784 from 1966 and we're left with 182.
Append the next digit (8) from the dividend to 182 and continue with: 1828 / 223

Let's proceed to step 5:
223 can be fit into 1828 8 times, resulting in a remainder of 44.
Put 8 as the next digit of the answer. 
Result so far: 88.0
If we subtract 1784 from 1828, we get 44.
Take the next digit (4) from the dividend and append it to 44, then repeat: 444 / 223

Moving on to step 6:
The number 223 fits into 444 1 times, leaving a remainder of 221.
Use 1 as the next digit of our solution. 
Result so far: 881.0
If we subtract 223 from 444, we get 221.
Take the next digit (0) from the dividend and append it to 221, then repeat: 2210 / 223

On to step 7:
When dividing 2210 by 223, we get 9 with a remainder of 203.
The next digit of our result is 9. 
Result so far: 8819.0
Deduct 2007 from 2210 and we're left with 203.
Fetch the next digit (5) from the dividend, attach it to 203 and continue: 2035 / 223

Step 8:
If we divide 2035 by 223, we get 9 and a remainder of 28.
Put 9 as the next digit of the answer. 
Result so far: 88199.0
If we subtract 2007 from 2035, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 9:
223 can be fit into 280 1 times, resulting in a remainder of 57.
The next digit of our result is 1. 
Result so far: 88199.1
If we subtract 223 from 280, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

On to step 10:
If we divide 570 by 223, we get 2 and a remainder of 124.
Use 2 as the next digit of our solution. 
Result so far: 88199.12
Subtract 446 from 570 to get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Moving on to step 11:
223 goes into 1240 5 times with a remainder of 125.
Record the quotient 5 as the next digit in the result. 
Result so far: 88199.125
Subtracting 1115 from 1240 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Let's proceed to step 12:
223 goes into 1250 5 times with a remainder of 135.
The next digit of our result is 5. 
Result so far: 88199.1255
Subtract 1115 from 1250 to get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

The final result is 88199.1255 with a remainder of 0.00135.