594481 divided by 45 
The aim is to understand the frequency of 45 in 594481.

Let's proceed to step 1:
When dividing 5 by 45, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 45

Advancing to step 2:
59 divided by 45 is 1 with a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 14 after subtracting 45 from 59.
Append the next digit (4) from the dividend to 14 and continue with: 144 / 45

Going ahead to step 3:
45 can be fit into 144 3 times, resulting in a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Subtracting 135 from 144 leaves us with 9.
Grab the next digit (4) from the dividend, add it to 9, then carry on: 94 / 45

Step 4:
94 divided by 45 is 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 132.0
Subtracting 90 from 94 leaves us with 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 45

Advancing to step 5:
48 divided by 45 is 1 with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 1321.0
If we subtract 45 from 48, we get 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 45

Let's proceed to step 6:
31 divided by 45 is 0 with a remainder of 31.
The number 0 becomes the next digit in our result. 
Result so far: 13210.0
If we take 0 away from 31, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 7:
The number 45 fits into 310 6 times, leaving a remainder of 40.
The number 6 becomes the next digit in our result. 
Result so far: 13210.6
Deduct 270 from 310 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 8:
45 can be fit into 400 8 times, resulting in a remainder of 40.
Put 8 as the next digit of the answer. 
Result so far: 13210.68
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 9:
The number 45 fits into 400 8 times, leaving a remainder of 40.
Write down 8 as next digit of the result. 
Result so far: 13210.688
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 13210.688 with a remaining 0.004.