We divide 787800 by 45
The aim is to understand the frequency of 45 in 787800.

Step 1:
45 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 45

Let's proceed to step 2:
45 goes into 78 1 times with a remainder of 33.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 45 from 78 to get 33.
Append the next digit (7) from the dividend to 33 and continue with: 337 / 45

Moving on to step 3:
When dividing 337 by 45, we get 7 with a remainder of 22.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Subtracting 315 from 337 leaves us with 22.
Append the next digit (8) from the dividend to 22 and continue with: 228 / 45

Moving on to step 4:
The number 45 fits into 228 5 times, leaving a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 175.0
If we take 225 away from 228, we end up with 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 45

Advancing to step 5:
45 can be fit into 30 0 times, resulting in a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 1750.0
If we take 0 away from 30, we end up with 30.
Fetch the next digit (0) from the dividend, attach it to 30 and continue: 300 / 45

Let's proceed to step 6:
When dividing 300 by 45, we get 6 with a remainder of 30.
Write down 6 as next digit of the result. 
Result so far: 17506.0
Deduct 270 from 300 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 7:
When dividing 300 by 45, we get 6 with a remainder of 30.
Write down 6 as next digit of the result. 
Result so far: 17506.6
Subtract 270 from 300 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 8:
When dividing 300 by 45, we get 6 with a remainder of 30.
Record the quotient 6 as the next digit in the result. 
Result so far: 17506.66
Subtracting 270 from 300 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

After the division, we end up with 17506.66 and a remainder of 0.03.