We look at the division of 80662088 by 78 
The aim is to understand the frequency of 78 in 80662088.

Moving on to step 1:
78 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 78

On to step 2:
If we divide 80 by 78, we get 1 and a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 78 from 80 leaves us with 2.
Append the next digit (6) from the dividend to 2 and continue with: 26 / 78

Going ahead to step 3:
The number 78 fits into 26 0 times, leaving a remainder of 26.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we take 0 away from 26, we end up with 26.
Bring next digit (6) of the dividend behind the 26 and repeat the process: 266 / 78

Moving on to step 4:
78 can be fit into 266 3 times, resulting in a remainder of 32.
Record the quotient 3 as the next digit in the result. 
Result so far: 103.0
Subtract 234 from 266 to get 32.
Include the next digit (2) from the dividend after 32, then repeat: 322 / 78

Advancing to step 5:
78 goes into 322 4 times with a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 1034.0
Subtract 312 from 322 to get 10.
Grab the next digit (0) from the dividend, add it to 10, then carry on: 100 / 78

Going ahead to step 6:
If we divide 100 by 78, we get 1 and a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 10341.0
If we take 78 away from 100, we end up with 22.
Fetch the next digit (8) from the dividend, attach it to 22 and continue: 228 / 78

Moving on to step 7:
If we divide 228 by 78, we get 2 and a remainder of 72.
The next digit of our result is 2. 
Result so far: 103412.0
If we take 156 away from 228, we end up with 72.
Grab the next digit (8) from the dividend, add it to 72, then carry on: 728 / 78

Step 8:
When dividing 728 by 78, we get 9 with a remainder of 26.
Write down 9 as next digit of the result. 
Result so far: 1034129.0
Deduct 702 from 728 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 9:
The number 78 fits into 260 3 times, leaving a remainder of 26.
Record the quotient 3 as the next digit in the result. 
Result so far: 1034129.3
If we take 234 away from 260, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 10:
The number 78 fits into 260 3 times, leaving a remainder of 26.
Use 3 as the next digit of our solution. 
Result so far: 1034129.33
Subtracting 234 from 260 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Our division results in 1034129.33 with a remaining 0.026.