879949 ÷ 78 
The aim is to understand the frequency of 78 in 879949.

Advancing to step 1:
78 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 78

Step 2:
87 divided by 78 is 1 with a remainder of 9.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 78 from 87 to get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 78

Moving on to step 3:
78 goes into 99 1 times with a remainder of 21.
The next digit of our result is 1. 
Result so far: 11.0
Deduct 78 from 99 and we're left with 21.
Append the next digit (9) from the dividend to 21 and continue with: 219 / 78

On to step 4:
When dividing 219 by 78, we get 2 with a remainder of 63.
The number 2 becomes the next digit in our result. 
Result so far: 112.0
If we take 156 away from 219, we end up with 63.
Include the next digit (4) from the dividend after 63, then repeat: 634 / 78

Going ahead to step 5:
78 goes into 634 8 times with a remainder of 10.
Write down 8 as next digit of the result. 
Result so far: 1128.0
Subtracting 624 from 634 leaves us with 10.
Grab the next digit (9) from the dividend, add it to 10, then carry on: 109 / 78

Let's proceed to step 6:
If we divide 109 by 78, we get 1 and a remainder of 31.
Record the quotient 1 as the next digit in the result. 
Result so far: 11281.0
If we take 78 away from 109, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 7:
The number 78 fits into 310 3 times, leaving a remainder of 76.
The number 3 becomes the next digit in our result. 
Result so far: 11281.3
Subtracting 234 from 310 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 8:
When dividing 760 by 78, we get 9 with a remainder of 58.
The number 9 becomes the next digit in our result. 
Result so far: 11281.39
If we subtract 702 from 760, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 9:
If we divide 580 by 78, we get 7 and a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 11281.397
If we take 546 away from 580, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 10:
The number 78 fits into 340 4 times, leaving a remainder of 28.
Record the quotient 4 as the next digit in the result. 
Result so far: 11281.3974
If we take 312 away from 340, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 11:
If we divide 280 by 78, we get 3 and a remainder of 46.
The next digit of our result is 3. 
Result so far: 11281.39743
If we subtract 234 from 280, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 12:
The number 78 fits into 460 5 times, leaving a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 11281.397435
Subtracting 390 from 460 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 13:
The number 78 fits into 700 8 times, leaving a remainder of 76.
Use 8 as the next digit of our solution. 
Result so far: 11281.3974358
Subtract 624 from 700 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 14:
78 can be fit into 760 9 times, resulting in a remainder of 58.
Put 9 as the next digit of the answer. 
Result so far: 11281.39743589
If we subtract 702 from 760, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

After the division, we end up with 11281.39743589 and a remainder of 5.8e-08.