We look at the division of 16505218 by 449 
The aim is to understand the frequency of 449 in 16505218.

On to step 1:
When dividing 1 by 449, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 449

Moving on to step 2:
The number 449 fits into 16 0 times, leaving a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 16, we end up with 16.
Bring next digit (5) of the dividend behind the 16 and repeat the process: 165 / 449

Step 3:
449 goes into 165 0 times with a remainder of 165.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 165, we end up with 165.
Bring next digit (0) of the dividend behind the 165 and repeat the process: 1650 / 449

Going ahead to step 4:
If we divide 1650 by 449, we get 3 and a remainder of 303.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtracting 1347 from 1650 leaves us with 303.
Fetch the next digit (5) from the dividend, attach it to 303 and continue: 3035 / 449

Moving on to step 5:
449 can be fit into 3035 6 times, resulting in a remainder of 341.
Put 6 as the next digit of the answer. 
Result so far: 36.0
If we subtract 2694 from 3035, we get 341.
Take the next digit (2) from the dividend and append it to 341, then repeat: 3412 / 449

Going ahead to step 6:
3412 divided by 449 is 7 with a remainder of 269.
Record the quotient 7 as the next digit in the result. 
Result so far: 367.0
Subtract 3143 from 3412 to get 269.
Append the next digit (1) from the dividend to 269 and continue with: 2691 / 449

Going ahead to step 7:
2691 divided by 449 is 5 with a remainder of 446.
Use 5 as the next digit of our solution. 
Result so far: 3675.0
The remainder is 446 after subtracting 2245 from 2691.
Append the next digit (8) from the dividend to 446 and continue with: 4468 / 449

Going ahead to step 8:
4468 divided by 449 is 9 with a remainder of 427.
Put 9 as the next digit of the answer. 
Result so far: 36759.0
If we take 4041 away from 4468, we end up with 427.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4270, and continue the process.

Advancing to step 9:
If we divide 4270 by 449, we get 9 and a remainder of 229.
Put 9 as the next digit of the answer. 
Result so far: 36759.9
Subtracting 4041 from 4270 leaves us with 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

Moving on to step 10:
449 goes into 2290 5 times with a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 36759.95
If we subtract 2245 from 2290, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 11:
When dividing 450 by 449, we get 1 with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 36759.951
The remainder is 1 after subtracting 449 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 12:
449 can be fit into 10 0 times, resulting in a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 36759.951
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 13:
449 can be fit into 100 0 times, resulting in a remainder of 100.
Record the quotient 0 as the next digit in the result. 
Result so far: 36759.951
The remainder is 100 after subtracting 0 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Our division results in 36759.951 with a remaining 0.0001.