778572 divided by 45 
The aim is to understand the frequency of 45 in 778572.

On to step 1:
45 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 45

Going ahead to step 2:
77 divided by 45 is 1 with a remainder of 32.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 45 from 77, we get 32.
Fetch the next digit (8) from the dividend, attach it to 32 and continue: 328 / 45

Going ahead to step 3:
45 can be fit into 328 7 times, resulting in a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 17.0
If we subtract 315 from 328, we get 13.
Append the next digit (5) from the dividend to 13 and continue with: 135 / 45

Let's proceed to step 4:
135 divided by 45 is 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 173.0
Subtract 135 from 135 to get 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 45

Advancing to step 5:
7 divided by 45 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 1730.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 45

On to step 6:
If we divide 72 by 45, we get 1 and a remainder of 27.
Record the quotient 1 as the next digit in the result. 
Result so far: 17301.0
If we subtract 45 from 72, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 7:
45 can be fit into 270 6 times, resulting in a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 17301.6
If we subtract 270 from 270, 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:
45 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 17301.6
The remainder is 0 after subtracting 0 from 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 9:
When dividing 0 by 45, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 17301.6
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.

Our division results in 17301.6 with a remaining 0.0.