387291 ÷ 78 
The aim is to understand the frequency of 78 in 387291.

Moving on to step 1:
78 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 78

Step 2:
38 divided by 78 is 0 with a remainder of 38.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 38 leaves us with 38.
Take the next digit (7) from the dividend and append it to 38, then repeat: 387 / 78

Advancing to step 3:
The number 78 fits into 387 4 times, leaving a remainder of 75.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 312 away from 387, we end up with 75.
Fetch the next digit (2) from the dividend, attach it to 75 and continue: 752 / 78

Step 4:
If we divide 752 by 78, we get 9 and a remainder of 50.
Write down 9 as next digit of the result. 
Result so far: 49.0
Deduct 702 from 752 and we're left with 50.
Fetch the next digit (9) from the dividend, attach it to 50 and continue: 509 / 78

Advancing to step 5:
509 divided by 78 is 6 with a remainder of 41.
The number 6 becomes the next digit in our result. 
Result so far: 496.0
If we take 468 away from 509, we end up with 41.
Include the next digit (1) from the dividend after 41, then repeat: 411 / 78

Moving on to step 6:
411 divided by 78 is 5 with a remainder of 21.
Use 5 as the next digit of our solution. 
Result so far: 4965.0
Subtracting 390 from 411 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 7:
If we divide 210 by 78, we get 2 and a remainder of 54.
The next digit of our result is 2. 
Result so far: 4965.2
If we take 156 away from 210, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 8:
The number 78 fits into 540 6 times, leaving a remainder of 72.
Write down 6 as next digit of the result. 
Result so far: 4965.26
Subtracting 468 from 540 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 9:
If we divide 720 by 78, we get 9 and a remainder of 18.
Record the quotient 9 as the next digit in the result. 
Result so far: 4965.269
If we take 702 away from 720, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 10:
78 goes into 180 2 times with a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 4965.2692
Subtracting 156 from 180 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
78 can be fit into 240 3 times, resulting in a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 4965.26923
If we subtract 234 from 240, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 12:
60 divided by 78 is 0 with a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 4965.26923
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 13:
78 can be fit into 600 7 times, resulting in a remainder of 54.
The next digit of our result is 7. 
Result so far: 4965.2692307
Subtract 546 from 600 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 14:
When dividing 540 by 78, we get 6 with a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 4965.26923076
Subtract 468 from 540 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Our division results in 4965.26923076 with a remaining 7.2e-08.