We divide 625600 by 78
The aim is to understand the frequency of 78 in 625600.

Step 1:
78 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 78

Advancing to step 2:
If we divide 62 by 78, we get 0 and a remainder of 62.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 62, we get 62.
Append the next digit (5) from the dividend to 62 and continue with: 625 / 78

Step 3:
When dividing 625 by 78, we get 8 with a remainder of 1.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 624 from 625 to get 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 78

Moving on to step 4:
78 can be fit into 16 0 times, resulting in a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 80.0
The remainder is 16 after subtracting 0 from 16.
Bring next digit (0) of the dividend behind the 16 and repeat the process: 160 / 78

Going ahead to step 5:
If we divide 160 by 78, we get 2 and a remainder of 4.
The next digit of our result is 2. 
Result so far: 802.0
If we take 156 away from 160, we end up with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 78

Let's proceed to step 6:
If we divide 40 by 78, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 8020.0
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 7:
The number 78 fits into 400 5 times, leaving a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 8020.5
The remainder is 10 after subtracting 390 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
78 can be fit into 100 1 times, resulting in a remainder of 22.
Record the quotient 1 as the next digit in the result. 
Result so far: 8020.51
If we subtract 78 from 100, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 9:
220 divided by 78 is 2 with a remainder of 64.
Record the quotient 2 as the next digit in the result. 
Result so far: 8020.512
Deduct 156 from 220 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 10:
78 can be fit into 640 8 times, resulting in a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 8020.5128
The remainder is 16 after subtracting 624 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 11:
78 can be fit into 160 2 times, resulting in a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 8020.51282
If we take 156 away from 160, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 12:
When dividing 40 by 78, we get 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 8020.51282
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 13:
78 goes into 400 5 times with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 8020.5128205
Subtracting 390 from 400 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 14:
100 divided by 78 is 1 with a remainder of 22.
Use 1 as the next digit of our solution. 
Result so far: 8020.51282051
Subtracting 78 from 100 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

In conclusion, the division gives 8020.51282051 with a balance of 2.2e-08.