We look at the division of 908379 by 45 
The aim is to understand the frequency of 45 in 908379.

Advancing to step 1:
When dividing 9 by 45, we get 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 45

Going ahead to step 2:
If we divide 90 by 45, we get 2 and a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 90 away from 90, we end up with 0.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 45

Let's proceed to step 3:
8 divided by 45 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
If we subtract 0 from 8, we get 8.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 45

On to step 4:
83 divided by 45 is 1 with a remainder of 38.
Record the quotient 1 as the next digit in the result. 
Result so far: 201.0
If we subtract 45 from 83, we get 38.
Include the next digit (7) from the dividend after 38, then repeat: 387 / 45

Let's proceed to step 5:
387 divided by 45 is 8 with a remainder of 27.
Put 8 as the next digit of the answer. 
Result so far: 2018.0
Subtract 360 from 387 to get 27.
Grab the next digit (9) from the dividend, add it to 27, then carry on: 279 / 45

Going ahead to step 6:
279 divided by 45 is 6 with a remainder of 9.
Use 6 as the next digit of our solution. 
Result so far: 20186.0
If we subtract 270 from 279, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 7:
When dividing 90 by 45, we get 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 20186.2
If we subtract 90 from 90, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
The number 45 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 20186.2
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
0 divided by 45 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 20186.2
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 20186.2, and the remainder is 0.0.