338819 divided by 45 
The aim is to understand the frequency of 45 in 338819.

Moving on to step 1:
When dividing 3 by 45, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 45

Going ahead to step 2:
If we divide 33 by 45, we get 0 and a remainder of 33.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 33, we get 33.
Fetch the next digit (8) from the dividend, attach it to 33 and continue: 338 / 45

Let's proceed to step 3:
45 goes into 338 7 times with a remainder of 23.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 315 from 338 and we're left with 23.
Bring next digit (8) of the dividend behind the 23 and repeat the process: 238 / 45

Step 4:
The number 45 fits into 238 5 times, leaving a remainder of 13.
Record the quotient 5 as the next digit in the result. 
Result so far: 75.0
Subtract 225 from 238 to get 13.
Include the next digit (1) from the dividend after 13, then repeat: 131 / 45

On to step 5:
45 can be fit into 131 2 times, resulting in a remainder of 41.
Write down 2 as next digit of the result. 
Result so far: 752.0
Subtract 90 from 131 to get 41.
Fetch the next digit (9) from the dividend, attach it to 41 and continue: 419 / 45

On to step 6:
If we divide 419 by 45, we get 9 and a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 7529.0
Deduct 405 from 419 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 7:
140 divided by 45 is 3 with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 7529.3
The remainder is 5 after subtracting 135 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
The number 45 fits into 50 1 times, leaving a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 7529.31
Deduct 45 from 50 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 9:
45 goes into 50 1 times with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 7529.311
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final result is 7529.311 with a remainder of 0.0005.