Let's divide 18309977 by 45
The aim is to understand the frequency of 45 in 18309977.

On to step 1:
45 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 45

Let's proceed to step 2:
If we divide 18 by 45, we get 0 and a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 18 leaves us with 18.
Bring next digit (3) of the dividend behind the 18 and repeat the process: 183 / 45

Going ahead to step 3:
When dividing 183 by 45, we get 4 with a remainder of 3.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 180 away from 183, we end up with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 45

Going ahead to step 4:
45 can be fit into 30 0 times, resulting in a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 40.0
Deduct 0 from 30 and we're left with 30.
Include the next digit (9) from the dividend after 30, then repeat: 309 / 45

On to step 5:
When dividing 309 by 45, we get 6 with a remainder of 39.
Record the quotient 6 as the next digit in the result. 
Result so far: 406.0
Deduct 270 from 309 and we're left with 39.
Grab the next digit (9) from the dividend, add it to 39, then carry on: 399 / 45

Let's proceed to step 6:
45 can be fit into 399 8 times, resulting in a remainder of 39.
The number 8 becomes the next digit in our result. 
Result so far: 4068.0
If we take 360 away from 399, we end up with 39.
Take the next digit (7) from the dividend and append it to 39, then repeat: 397 / 45

Step 7:
45 goes into 397 8 times with a remainder of 37.
The next digit of our result is 8. 
Result so far: 40688.0
If we take 360 away from 397, we end up with 37.
Grab the next digit (7) from the dividend, add it to 37, then carry on: 377 / 45

Step 8:
When dividing 377 by 45, we get 8 with a remainder of 17.
The number 8 becomes the next digit in our result. 
Result so far: 406888.0
The remainder is 17 after subtracting 360 from 377.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 9:
170 divided by 45 is 3 with a remainder of 35.
The next digit of our result is 3. 
Result so far: 406888.3
Deduct 135 from 170 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.

Let's proceed to step 10:
45 goes into 350 7 times with a remainder of 35.
The next digit of our result is 7. 
Result so far: 406888.37
Subtracting 315 from 350 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 11:
350 divided by 45 is 7 with a remainder of 35.
Put 7 as the next digit of the answer. 
Result so far: 406888.377
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.

The final outcome is 406888.377, with a leftover of 0.0035.