897992 ÷ 45 
The aim is to understand the frequency of 45 in 897992.

On to step 1:
The number 45 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 45

Moving on to step 2:
The number 45 fits into 89 1 times, leaving a remainder of 44.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 45 from 89 and we're left with 44.
Include the next digit (7) from the dividend after 44, then repeat: 447 / 45

On to step 3:
447 divided by 45 is 9 with a remainder of 42.
Put 9 as the next digit of the answer. 
Result so far: 19.0
Subtract 405 from 447 to get 42.
Grab the next digit (9) from the dividend, add it to 42, then carry on: 429 / 45

Moving on to step 4:
If we divide 429 by 45, we get 9 and a remainder of 24.
The next digit of our result is 9. 
Result so far: 199.0
Deduct 405 from 429 and we're left with 24.
Bring next digit (9) of the dividend behind the 24 and repeat the process: 249 / 45

Advancing to step 5:
45 goes into 249 5 times with a remainder of 24.
The next digit of our result is 5. 
Result so far: 1995.0
If we subtract 225 from 249, we get 24.
Include the next digit (2) from the dividend after 24, then repeat: 242 / 45

Step 6:
242 divided by 45 is 5 with a remainder of 17.
The next digit of our result is 5. 
Result so far: 19955.0
The remainder is 17 after subtracting 225 from 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 7:
170 divided by 45 is 3 with a remainder of 35.
Use 3 as the next digit of our solution. 
Result so far: 19955.3
Subtracting 135 from 170 leaves us 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.

Advancing to step 8:
350 divided by 45 is 7 with a remainder of 35.
The next digit of our result is 7. 
Result so far: 19955.37
If we subtract 315 from 350, 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.

Going ahead to step 9:
The number 45 fits into 350 7 times, leaving a remainder of 35.
The next digit of our result is 7. 
Result so far: 19955.377
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 19955.377, and the remainder is 0.0035.