We're dividing 789650 by 45 
The aim is to understand the frequency of 45 in 789650.

Step 1:
When dividing 7 by 45, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 45

Advancing to step 2:
The number 45 fits into 78 1 times, leaving a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 45 from 78, we get 33.
Grab the next digit (9) from the dividend, add it to 33, then carry on: 339 / 45

Moving on to step 3:
339 divided by 45 is 7 with a remainder of 24.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Subtracting 315 from 339 leaves us with 24.
Include the next digit (6) from the dividend after 24, then repeat: 246 / 45

Let's proceed to step 4:
45 can be fit into 246 5 times, resulting in a remainder of 21.
Write down 5 as next digit of the result. 
Result so far: 175.0
If we take 225 away from 246, we end up with 21.
Bring next digit (5) of the dividend behind the 21 and repeat the process: 215 / 45

Let's proceed to step 5:
The number 45 fits into 215 4 times, leaving a remainder of 35.
The next digit of our result is 4. 
Result so far: 1754.0
If we take 180 away from 215, we end up with 35.
Include the next digit (0) from the dividend after 35, then repeat: 350 / 45

Let's proceed to step 6:
When dividing 350 by 45, we get 7 with a remainder of 35.
Record the quotient 7 as the next digit in the result. 
Result so far: 17547.0
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.

Going ahead to step 7:
If we divide 350 by 45, we get 7 and a remainder of 35.
Put 7 as the next digit of the answer. 
Result so far: 17547.7
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.

On to step 8:
The number 45 fits into 350 7 times, leaving a remainder of 35.
The next digit of our result is 7. 
Result so far: 17547.77
If we subtract 315 from 350, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The quotient of the division is 17547.77, and the remainder is 0.035.