780776 ÷ 45 
The aim is to understand the frequency of 45 in 780776.

Step 1:
7 divided by 45 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 45

Going ahead to step 2:
45 can be fit into 78 1 times, resulting in a remainder of 33.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 45 away from 78, we end up with 33.
Grab the next digit (0) from the dividend, add it to 33, then carry on: 330 / 45

Step 3:
45 goes into 330 7 times with a remainder of 15.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Subtract 315 from 330 to get 15.
Append the next digit (7) from the dividend to 15 and continue with: 157 / 45

Step 4:
45 goes into 157 3 times with a remainder of 22.
Put 3 as the next digit of the answer. 
Result so far: 173.0
If we take 135 away from 157, we end up with 22.
Include the next digit (7) from the dividend after 22, then repeat: 227 / 45

Step 5:
The number 45 fits into 227 5 times, leaving a remainder of 2.
Use 5 as the next digit of our solution. 
Result so far: 1735.0
If we take 225 away from 227, we end up with 2.
Bring next digit (6) of the dividend behind the 2 and repeat the process: 26 / 45

On to step 6:
26 divided by 45 is 0 with a remainder of 26.
The number 0 becomes the next digit in our result. 
Result so far: 17350.0
The remainder is 26 after subtracting 0 from 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 7:
45 goes into 260 5 times with a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 17350.5
If we take 225 away from 260, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 8:
350 divided by 45 is 7 with a remainder of 35.
Write down 7 as next digit of the result. 
Result so far: 17350.57
The remainder is 35 after subtracting 315 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 9:
When dividing 350 by 45, we get 7 with a remainder of 35.
Write down 7 as next digit of the result. 
Result so far: 17350.577
Deduct 315 from 350 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Our division results in 17350.577 with a remaining 0.0035.