997712 ÷ 45 
The aim is to understand the frequency of 45 in 997712.

Let's proceed to step 1:
45 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 45

Step 2:
When dividing 99 by 45, we get 2 with a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 90 from 99 leaves us with 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 45

Moving on to step 3:
If we divide 97 by 45, we get 2 and a remainder of 7.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
Subtracting 90 from 97 leaves us with 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 45

Going ahead to step 4:
77 divided by 45 is 1 with a remainder of 32.
The number 1 becomes the next digit in our result. 
Result so far: 221.0
If we take 45 away from 77, we end up with 32.
Append the next digit (1) from the dividend to 32 and continue with: 321 / 45

Moving on to step 5:
45 can be fit into 321 7 times, resulting in a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 2217.0
If we take 315 away from 321, we end up with 6.
Grab the next digit (2) from the dividend, add it to 6, then carry on: 62 / 45

Moving on to step 6:
45 goes into 62 1 times with a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 22171.0
Deduct 45 from 62 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 7:
When dividing 170 by 45, we get 3 with a remainder of 35.
The next digit of our result is 3. 
Result so far: 22171.3
If we subtract 135 from 170, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 8:
If we divide 350 by 45, we get 7 and a remainder of 35.
The next digit of our result is 7. 
Result so far: 22171.37
Deduct 315 from 350 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 9:
350 divided by 45 is 7 with a remainder of 35.
Write down 7 as next digit of the result. 
Result so far: 22171.377
Deduct 315 from 350 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The quotient of the division is 22171.377, and the remainder is 0.0035.