160915 ÷ 45 
The aim is to understand the frequency of 45 in 160915.

Step 1:
45 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 45

Advancing to step 2:
If we divide 16 by 45, we get 0 and a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Take the next digit (0) from the dividend and append it to 16, then repeat: 160 / 45

Let's proceed to step 3:
When dividing 160 by 45, we get 3 with a remainder of 25.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 25 after subtracting 135 from 160.
Fetch the next digit (9) from the dividend, attach it to 25 and continue: 259 / 45

Going ahead to step 4:
If we divide 259 by 45, we get 5 and a remainder of 34.
Record the quotient 5 as the next digit in the result. 
Result so far: 35.0
If we subtract 225 from 259, we get 34.
Bring next digit (1) of the dividend behind the 34 and repeat the process: 341 / 45

Step 5:
45 can be fit into 341 7 times, resulting in a remainder of 26.
Use 7 as the next digit of our solution. 
Result so far: 357.0
The remainder is 26 after subtracting 315 from 341.
Bring next digit (5) of the dividend behind the 26 and repeat the process: 265 / 45

Let's proceed to step 6:
265 divided by 45 is 5 with a remainder of 40.
Put 5 as the next digit of the answer. 
Result so far: 3575.0
Subtracting 225 from 265 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 7:
45 goes into 400 8 times with a remainder of 40.
Write down 8 as next digit of the result. 
Result so far: 3575.8
If we take 360 away from 400, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 8:
400 divided by 45 is 8 with a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 3575.88
Deduct 360 from 400 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 3575.88 with a remaining 0.04.