Let's divide 648537 by 78
The aim is to understand the frequency of 78 in 648537.

On to 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.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 78

Moving on to step 2:
When dividing 64 by 78, we get 0 with a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Grab the next digit (8) from the dividend, add it to 64, then carry on: 648 / 78

Advancing to step 3:
78 goes into 648 8 times with a remainder of 24.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
If we subtract 624 from 648, we get 24.
Bring next digit (5) of the dividend behind the 24 and repeat the process: 245 / 78

Advancing to step 4:
The number 78 fits into 245 3 times, leaving a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 83.0
Deduct 234 from 245 and we're left with 11.
Bring next digit (3) of the dividend behind the 11 and repeat the process: 113 / 78

On to step 5:
If we divide 113 by 78, we get 1 and a remainder of 35.
The next digit of our result is 1. 
Result so far: 831.0
Subtracting 78 from 113 leaves us with 35.
Take the next digit (7) from the dividend and append it to 35, then repeat: 357 / 78

Going ahead to step 6:
If we divide 357 by 78, we get 4 and a remainder of 45.
The number 4 becomes the next digit in our result. 
Result so far: 8314.0
If we take 312 away from 357, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 7:
When dividing 450 by 78, we get 5 with a remainder of 60.
Record the quotient 5 as the next digit in the result. 
Result so far: 8314.5
If we take 390 away from 450, we end up 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 8:
The number 78 fits into 600 7 times, leaving a remainder of 54.
Use 7 as the next digit of our solution. 
Result so far: 8314.57
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.

On to step 9:
540 divided by 78 is 6 with a remainder of 72.
The number 6 becomes the next digit in our result. 
Result so far: 8314.576
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.

Moving on to step 10:
The number 78 fits into 720 9 times, leaving a remainder of 18.
The number 9 becomes the next digit in our result. 
Result so far: 8314.5769
If we subtract 702 from 720, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 11:
78 goes into 180 2 times with a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 8314.57692
If we take 156 away from 180, we end up 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.

Going ahead to step 12:
If we divide 240 by 78, we get 3 and a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 8314.576923
The remainder is 6 after subtracting 234 from 240.
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 13:
78 can be fit into 60 0 times, resulting in a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 8314.576923
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 14:
When dividing 600 by 78, we get 7 with a remainder of 54.
Record the quotient 7 as the next digit in the result. 
Result so far: 8314.57692307
Subtracting 546 from 600 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.

Our division results in 8314.57692307 with a remaining 5.4e-08.