549663 ÷ 78 
The aim is to understand the frequency of 78 in 549663.

On to step 1:
The number 78 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 78

Let's proceed to step 2:
The number 78 fits into 54 0 times, leaving a remainder of 54.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 54 to get 54.
Append the next digit (9) from the dividend to 54 and continue with: 549 / 78

Going ahead to step 3:
If we divide 549 by 78, we get 7 and a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
The remainder is 3 after subtracting 546 from 549.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 78

Moving on to step 4:
78 can be fit into 36 0 times, resulting in a remainder of 36.
Use 0 as the next digit of our solution. 
Result so far: 70.0
Subtract 0 from 36 to get 36.
Grab the next digit (6) from the dividend, add it to 36, then carry on: 366 / 78

Advancing to step 5:
The number 78 fits into 366 4 times, leaving a remainder of 54.
Use 4 as the next digit of our solution. 
Result so far: 704.0
The remainder is 54 after subtracting 312 from 366.
Grab the next digit (3) from the dividend, add it to 54, then carry on: 543 / 78

Step 6:
If we divide 543 by 78, we get 6 and a remainder of 75.
Write down 6 as next digit of the result. 
Result so far: 7046.0
Subtracting 468 from 543 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 7:
The number 78 fits into 750 9 times, leaving a remainder of 48.
Record the quotient 9 as the next digit in the result. 
Result so far: 7046.9
The remainder is 48 after subtracting 702 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 8:
If we divide 480 by 78, we get 6 and a remainder of 12.
The next digit of our result is 6. 
Result so far: 7046.96
Subtract 468 from 480 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 9:
120 divided by 78 is 1 with a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 7046.961
Subtracting 78 from 120 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 10:
If we divide 420 by 78, we get 5 and a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 7046.9615
If we subtract 390 from 420, we 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.

On to step 11:
78 can be fit into 300 3 times, resulting in a remainder of 66.
The next digit of our result is 3. 
Result so far: 7046.96153
The remainder is 66 after subtracting 234 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 12:
78 can be fit into 660 8 times, resulting in a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 7046.961538
Subtract 624 from 660 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 13:
78 can be fit into 360 4 times, resulting in a remainder of 48.
The next digit of our result is 4. 
Result so far: 7046.9615384
If we take 312 away from 360, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 14:
78 goes into 480 6 times with a remainder of 12.
The next digit of our result is 6. 
Result so far: 7046.96153846
If we subtract 468 from 480, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 7046.96153846 and a remainder of 1.2e-08.