We look at the division of 188002 by 78 
The aim is to understand the frequency of 78 in 188002.

On to step 1:
78 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 78

Advancing to step 2:
If we divide 18 by 78, we get 0 and a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 18 to get 18.
Take the next digit (8) from the dividend and append it to 18, then repeat: 188 / 78

Step 3:
78 goes into 188 2 times with a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 156 away from 188, we end up with 32.
Append the next digit (0) from the dividend to 32 and continue with: 320 / 78

Step 4:
If we divide 320 by 78, we get 4 and a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 24.0
Subtracting 312 from 320 leaves us with 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 78

On to step 5:
78 can be fit into 80 1 times, resulting in a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 241.0
Deduct 78 from 80 and we're left with 2.
Bring next digit (2) of the dividend behind the 2 and repeat the process: 22 / 78

Step 6:
When dividing 22 by 78, we get 0 with a remainder of 22.
The next digit of our result is 0. 
Result so far: 2410.0
If we take 0 away from 22, we end up 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.

Moving on to step 7:
The number 78 fits into 220 2 times, leaving a remainder of 64.
Put 2 as the next digit of the answer. 
Result so far: 2410.2
Subtracting 156 from 220 leaves us 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.

Going ahead to step 8:
78 can be fit into 640 8 times, resulting in a remainder of 16.
The next digit of our result is 8. 
Result so far: 2410.28
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.

Advancing to step 9:
The number 78 fits into 160 2 times, leaving a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 2410.282
Subtracting 156 from 160 leaves us 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.

Going ahead to step 10:
78 goes into 40 0 times with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 2410.282
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 11:
78 can be fit into 400 5 times, resulting in a remainder of 10.
The next digit of our result is 5. 
Result so far: 2410.28205
Deduct 390 from 400 and we're left 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 12:
100 divided by 78 is 1 with a remainder of 22.
Record the quotient 1 as the next digit in the result. 
Result so far: 2410.282051
Deduct 78 from 100 and we're left 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.

Step 13:
78 goes into 220 2 times with a remainder of 64.
Put 2 as the next digit of the answer. 
Result so far: 2410.2820512
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.

Advancing to step 14:
78 goes into 640 8 times with a remainder of 16.
The next digit of our result is 8. 
Result so far: 2410.28205128
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.

The final result is 2410.28205128 with a remainder of 1.6e-08.