We divide 774590 by 45
The aim is to understand the frequency of 45 in 774590.

On to step 1:
7 divided by 45 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 45

Advancing to step 2:
When dividing 77 by 45, we get 1 with a remainder of 32.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 45 from 77 to get 32.
Include the next digit (4) from the dividend after 32, then repeat: 324 / 45

Step 3:
45 goes into 324 7 times with a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
Subtracting 315 from 324 leaves us with 9.
Include the next digit (5) from the dividend after 9, then repeat: 95 / 45

Step 4:
The number 45 fits into 95 2 times, leaving a remainder of 5.
The next digit of our result is 2. 
Result so far: 172.0
Deduct 90 from 95 and we're left with 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 45

Moving on to step 5:
If we divide 59 by 45, we get 1 and a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 1721.0
If we subtract 45 from 59, we get 14.
Take the next digit (0) from the dividend and append it to 14, then repeat: 140 / 45

Going ahead to step 6:
When dividing 140 by 45, we get 3 with a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 17213.0
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.

Going ahead to step 7:
When dividing 50 by 45, we get 1 with a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 17213.1
Subtracting 45 from 50 leaves us 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.

Going ahead to step 8:
45 can be fit into 50 1 times, resulting in a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 17213.11
Subtracting 45 from 50 leaves us 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.

The final result is 17213.11 with a remainder of 0.005.