254899 ÷ 45 
The aim is to understand the frequency of 45 in 254899.

Let's proceed to step 1:
2 divided by 45 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 45

Advancing to step 2:
45 goes into 25 0 times with a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Bring next digit (4) of the dividend behind the 25 and repeat the process: 254 / 45

Let's proceed to step 3:
If we divide 254 by 45, we get 5 and a remainder of 29.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we subtract 225 from 254, we get 29.
Include the next digit (8) from the dividend after 29, then repeat: 298 / 45

Moving on to step 4:
The number 45 fits into 298 6 times, leaving a remainder of 28.
Write down 6 as next digit of the result. 
Result so far: 56.0
If we subtract 270 from 298, we get 28.
Append the next digit (9) from the dividend to 28 and continue with: 289 / 45

On to step 5:
45 goes into 289 6 times with a remainder of 19.
Write down 6 as next digit of the result. 
Result so far: 566.0
Deduct 270 from 289 and we're left with 19.
Include the next digit (9) from the dividend after 19, then repeat: 199 / 45

On to step 6:
The number 45 fits into 199 4 times, leaving a remainder of 19.
The next digit of our result is 4. 
Result so far: 5664.0
Subtracting 180 from 199 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 7:
45 goes into 190 4 times with a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 5664.4
Deduct 180 from 190 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.

Moving on to step 8:
If we divide 100 by 45, we get 2 and a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 5664.42
If we subtract 90 from 100, we get 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 9:
45 can be fit into 100 2 times, resulting in a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 5664.422
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 5664.422, with a leftover of 0.001.