425667 divided by 78 
The aim is to understand the frequency of 78 in 425667.

Step 1:
78 can be fit into 4 0 times, resulting in a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 78

Going ahead to step 2:
The number 78 fits into 42 0 times, leaving a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Take the next digit (5) from the dividend and append it to 42, then repeat: 425 / 78

Let's proceed to step 3:
78 goes into 425 5 times with a remainder of 35.
The next digit of our result is 5. 
Result so far: 5.0
The remainder is 35 after subtracting 390 from 425.
Grab the next digit (6) from the dividend, add it to 35, then carry on: 356 / 78

Advancing to step 4:
If we divide 356 by 78, we get 4 and a remainder of 44.
Write down 4 as next digit of the result. 
Result so far: 54.0
Deduct 312 from 356 and we're left with 44.
Fetch the next digit (6) from the dividend, attach it to 44 and continue: 446 / 78

On to step 5:
446 divided by 78 is 5 with a remainder of 56.
The next digit of our result is 5. 
Result so far: 545.0
If we take 390 away from 446, we end up with 56.
Grab the next digit (7) from the dividend, add it to 56, then carry on: 567 / 78

Step 6:
If we divide 567 by 78, we get 7 and a remainder of 21.
Use 7 as the next digit of our solution. 
Result so far: 5457.0
Subtracting 546 from 567 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.

Moving on to step 7:
When dividing 210 by 78, we get 2 with a remainder of 54.
Use 2 as the next digit of our solution. 
Result so far: 5457.2
Subtracting 156 from 210 leaves us 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.

Going ahead to step 8:
78 goes into 540 6 times with a remainder of 72.
The number 6 becomes the next digit in our result. 
Result so far: 5457.26
If we subtract 468 from 540, we 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.

Step 9:
The number 78 fits into 720 9 times, leaving a remainder of 18.
Put 9 as the next digit of the answer. 
Result so far: 5457.269
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:
180 divided by 78 is 2 with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 5457.2692
If we subtract 156 from 180, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 11:
The number 78 fits into 240 3 times, leaving a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 5457.26923
Deduct 234 from 240 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 12:
When dividing 60 by 78, we get 0 with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 5457.26923
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 13:
78 can be fit into 600 7 times, resulting in a remainder of 54.
Put 7 as the next digit of the answer. 
Result so far: 5457.2692307
If we subtract 546 from 600, we 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.

Let's proceed to step 14:
If we divide 540 by 78, we get 6 and a remainder of 72.
The number 6 becomes the next digit in our result. 
Result so far: 5457.26923076
The remainder is 72 after subtracting 468 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The final outcome is 5457.26923076, with a leftover of 7.2e-08.