We divide 12566454 by 45
The aim is to understand the frequency of 45 in 12566454.

Advancing to step 1:
45 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 45

Moving on to step 2:
12 divided by 45 is 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Bring next digit (5) of the dividend behind the 12 and repeat the process: 125 / 45

Moving on to step 3:
When dividing 125 by 45, we get 2 with a remainder of 35.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 90 from 125 leaves us with 35.
Fetch the next digit (6) from the dividend, attach it to 35 and continue: 356 / 45

On to step 4:
If we divide 356 by 45, we get 7 and a remainder of 41.
The number 7 becomes the next digit in our result. 
Result so far: 27.0
If we subtract 315 from 356, we get 41.
Fetch the next digit (6) from the dividend, attach it to 41 and continue: 416 / 45

Let's proceed to step 5:
45 can be fit into 416 9 times, resulting in a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 279.0
The remainder is 11 after subtracting 405 from 416.
Grab the next digit (4) from the dividend, add it to 11, then carry on: 114 / 45

On to step 6:
When dividing 114 by 45, we get 2 with a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 2792.0
Subtract 90 from 114 to get 24.
Grab the next digit (5) from the dividend, add it to 24, then carry on: 245 / 45

Advancing to step 7:
45 can be fit into 245 5 times, resulting in a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 27925.0
Subtract 225 from 245 to get 20.
Grab the next digit (4) from the dividend, add it to 20, then carry on: 204 / 45

Moving on to step 8:
When dividing 204 by 45, we get 4 with a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 279254.0
The remainder is 24 after subtracting 180 from 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 9:
45 can be fit into 240 5 times, resulting in a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 279254.5
The remainder is 15 after subtracting 225 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 10:
150 divided by 45 is 3 with a remainder of 15.
Record the quotient 3 as the next digit in the result. 
Result so far: 279254.53
If we subtract 135 from 150, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 11:
150 divided by 45 is 3 with a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 279254.533
Deduct 135 from 150 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final result is 279254.533 with a remainder of 0.0015.