784233 ÷ 78 
The aim is to understand the frequency of 78 in 784233.

Let's proceed to step 1:
78 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 78

Moving on to step 2:
If we divide 78 by 78, we get 1 and a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 78 from 78 to get 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 78

Moving on to step 3:
4 divided by 78 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 10.0
Subtract 0 from 4 to get 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 78

Moving on to step 4:
When dividing 42 by 78, we get 0 with a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 100.0
If we take 0 away from 42, we end up with 42.
Take the next digit (3) from the dividend and append it to 42, then repeat: 423 / 78

Advancing to step 5:
78 can be fit into 423 5 times, resulting in a remainder of 33.
The number 5 becomes the next digit in our result. 
Result so far: 1005.0
If we subtract 390 from 423, we get 33.
Take the next digit (3) from the dividend and append it to 33, then repeat: 333 / 78

Moving on to step 6:
When dividing 333 by 78, we get 4 with a remainder of 21.
Write down 4 as next digit of the result. 
Result so far: 10054.0
Deduct 312 from 333 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 7:
If we divide 210 by 78, we get 2 and a remainder of 54.
Put 2 as the next digit of the answer. 
Result so far: 10054.2
The remainder is 54 after subtracting 156 from 210.
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 8:
78 can be fit into 540 6 times, resulting in a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 10054.26
If we take 468 away from 540, we end up 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.

On to step 9:
The number 78 fits into 720 9 times, leaving a remainder of 18.
Record the quotient 9 as the next digit in the result. 
Result so far: 10054.269
Subtracting 702 from 720 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 10:
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: 10054.2692
Subtracting 156 from 180 leaves us 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.

Step 11:
78 can be fit into 240 3 times, resulting in a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 10054.26923
If we subtract 234 from 240, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 12:
78 goes into 60 0 times with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 10054.26923
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 13:
78 goes into 600 7 times with a remainder of 54.
Put 7 as the next digit of the answer. 
Result so far: 10054.2692307
Subtract 546 from 600 to 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.

Step 14:
540 divided by 78 is 6 with a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 10054.26923076
Deduct 468 from 540 and we're left 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.

After the division, we end up with 10054.26923076 and a remainder of 7.2e-08.