We look at the division of 880389 by 78 
The aim is to understand the frequency of 78 in 880389.

Moving on to step 1:
78 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (8) from the dividend, attach it to 8 and continue: 88 / 78

Let's proceed to step 2:
When dividing 88 by 78, we get 1 with a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 78 from 88 leaves us with 10.
Take the next digit (0) from the dividend and append it to 10, then repeat: 100 / 78

Moving on to step 3:
100 divided by 78 is 1 with a remainder of 22.
The next digit of our result is 1. 
Result so far: 11.0
Subtracting 78 from 100 leaves us with 22.
Append the next digit (3) from the dividend to 22 and continue with: 223 / 78

Going ahead to step 4:
If we divide 223 by 78, we get 2 and a remainder of 67.
Put 2 as the next digit of the answer. 
Result so far: 112.0
If we take 156 away from 223, we end up with 67.
Include the next digit (8) from the dividend after 67, then repeat: 678 / 78

Let's proceed to step 5:
If we divide 678 by 78, we get 8 and a remainder of 54.
The number 8 becomes the next digit in our result. 
Result so far: 1128.0
Subtract 624 from 678 to get 54.
Grab the next digit (9) from the dividend, add it to 54, then carry on: 549 / 78

Let's proceed to step 6:
549 divided by 78 is 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 11287.0
Subtracting 546 from 549 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
The number 78 fits into 30 0 times, leaving a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 11287.0
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
The number 78 fits into 300 3 times, leaving a remainder of 66.
Write down 3 as next digit of the result. 
Result so far: 11287.03
Subtracting 234 from 300 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 9:
78 can be fit into 660 8 times, resulting in a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 11287.038
Deduct 624 from 660 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 10:
The number 78 fits into 360 4 times, leaving a remainder of 48.
Record the quotient 4 as the next digit in the result. 
Result so far: 11287.0384
Subtracting 312 from 360 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 11:
78 can be fit into 480 6 times, resulting in a remainder of 12.
The next digit of our result is 6. 
Result so far: 11287.03846
Subtracting 468 from 480 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 12:
78 can be fit into 120 1 times, resulting in a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 11287.038461
If we take 78 away from 120, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 13:
78 can be fit into 420 5 times, resulting in a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 11287.0384615
If we subtract 390 from 420, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 14:
The number 78 fits into 300 3 times, leaving a remainder of 66.
The next digit of our result is 3. 
Result so far: 11287.03846153
The remainder is 66 after subtracting 234 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

The final result is 11287.03846153 with a remainder of 6.6e-08.