We're dividing 572489 by 78 
The aim is to understand the frequency of 78 in 572489.

Step 1:
If we divide 5 by 78, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 78

Moving on to step 2:
The number 78 fits into 57 0 times, leaving a remainder of 57.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 57 after subtracting 0 from 57.
Take the next digit (2) from the dividend and append it to 57, then repeat: 572 / 78

On to step 3:
78 goes into 572 7 times with a remainder of 26.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtracting 546 from 572 leaves us with 26.
Include the next digit (4) from the dividend after 26, then repeat: 264 / 78

Moving on to step 4:
If we divide 264 by 78, we get 3 and a remainder of 30.
The next digit of our result is 3. 
Result so far: 73.0
Subtracting 234 from 264 leaves us with 30.
Fetch the next digit (8) from the dividend, attach it to 30 and continue: 308 / 78

Let's proceed to step 5:
The number 78 fits into 308 3 times, leaving a remainder of 74.
The number 3 becomes the next digit in our result. 
Result so far: 733.0
The remainder is 74 after subtracting 234 from 308.
Grab the next digit (9) from the dividend, add it to 74, then carry on: 749 / 78

Step 6:
78 can be fit into 749 9 times, resulting in a remainder of 47.
Use 9 as the next digit of our solution. 
Result so far: 7339.0
If we subtract 702 from 749, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Going ahead to step 7:
78 goes into 470 6 times with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 7339.6
The remainder is 2 after subtracting 468 from 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
The number 78 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 7339.6
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 9:
The number 78 fits into 200 2 times, leaving a remainder of 44.
The next digit of our result is 2. 
Result so far: 7339.602
Deduct 156 from 200 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 10:
78 can be fit into 440 5 times, resulting in a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 7339.6025
Deduct 390 from 440 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 11:
The number 78 fits into 500 6 times, leaving a remainder of 32.
Put 6 as the next digit of the answer. 
Result so far: 7339.60256
Subtract 468 from 500 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 12:
78 goes into 320 4 times with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 7339.602564
Subtract 312 from 320 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 13:
80 divided by 78 is 1 with a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 7339.6025641
Subtracting 78 from 80 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 14:
The number 78 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 7339.6025641
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final result is 7339.6025641 with a remainder of 2e-08.