80453 divided by 45 
The aim is to understand the frequency of 45 in 80453.

Step 1:
If we divide 8 by 45, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 45

Advancing to step 2:
80 divided by 45 is 1 with a remainder of 35.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 45 from 80, we get 35.
Include the next digit (4) from the dividend after 35, then repeat: 354 / 45

Moving on to step 3:
When dividing 354 by 45, we get 7 with a remainder of 39.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
Subtracting 315 from 354 leaves us with 39.
Bring next digit (5) of the dividend behind the 39 and repeat the process: 395 / 45

Going ahead to step 4:
45 can be fit into 395 8 times, resulting in a remainder of 35.
Write down 8 as next digit of the result. 
Result so far: 178.0
If we subtract 360 from 395, we get 35.
Include the next digit (3) from the dividend after 35, then repeat: 353 / 45

Moving on to step 5:
353 divided by 45 is 7 with a remainder of 38.
The number 7 becomes the next digit in our result. 
Result so far: 1787.0
Deduct 315 from 353 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 6:
If we divide 380 by 45, we get 8 and a remainder of 20.
The number 8 becomes the next digit in our result. 
Result so far: 1787.8
If we subtract 360 from 380, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 7:
45 can be fit into 200 4 times, resulting in a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 1787.84
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
If we divide 200 by 45, we get 4 and a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 1787.844
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 1787.844 with a remaining 0.002.