998189 ÷ 45 
The aim is to understand the frequency of 45 in 998189.

Moving on to step 1:
45 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 45

On to step 2:
45 can be fit into 99 2 times, resulting in a remainder of 9.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 90 from 99 to get 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 45

Step 3:
45 can be fit into 98 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 22.0
The remainder is 8 after subtracting 90 from 98.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 45

Step 4:
45 goes into 81 1 times with a remainder of 36.
The number 1 becomes the next digit in our result. 
Result so far: 221.0
If we take 45 away from 81, we end up with 36.
Include the next digit (8) from the dividend after 36, then repeat: 368 / 45

Moving on to step 5:
368 divided by 45 is 8 with a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 2218.0
The remainder is 8 after subtracting 360 from 368.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 45

Step 6:
If we divide 89 by 45, we get 1 and a remainder of 44.
Put 1 as the next digit of the answer. 
Result so far: 22181.0
Deduct 45 from 89 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 7:
When dividing 440 by 45, we get 9 with a remainder of 35.
Put 9 as the next digit of the answer. 
Result so far: 22181.9
If we subtract 405 from 440, 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.

Advancing 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: 22181.97
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.

Moving on to step 9:
350 divided by 45 is 7 with a remainder of 35.
Record the quotient 7 as the next digit in the result. 
Result so far: 22181.977
The remainder is 35 after subtracting 315 from 350.
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 22181.977, and the remainder is 0.0035.