843723 divided by 78 
The aim is to understand the frequency of 78 in 843723.

Step 1:
The number 78 fits into 8 0 times, leaving 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.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 78

Step 2:
84 divided by 78 is 1 with a remainder of 6.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 78 from 84, we get 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 78

On to step 3:
78 can be fit into 63 0 times, resulting in a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 10.0
Deduct 0 from 63 and we're left with 63.
Grab the next digit (7) from the dividend, add it to 63, then carry on: 637 / 78

Let's proceed to step 4:
When dividing 637 by 78, we get 8 with a remainder of 13.
Put 8 as the next digit of the answer. 
Result so far: 108.0
If we subtract 624 from 637, we get 13.
Take the next digit (2) from the dividend and append it to 13, then repeat: 132 / 78

Let's proceed to step 5:
When dividing 132 by 78, we get 1 with a remainder of 54.
Write down 1 as next digit of the result. 
Result so far: 1081.0
Subtract 78 from 132 to get 54.
Bring next digit (3) of the dividend behind the 54 and repeat the process: 543 / 78

Step 6:
The number 78 fits into 543 6 times, leaving a remainder of 75.
The next digit of our result is 6. 
Result so far: 10816.0
If we subtract 468 from 543, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 7:
78 goes into 750 9 times with a remainder of 48.
Record the quotient 9 as the next digit in the result. 
Result so far: 10816.9
The remainder is 48 after subtracting 702 from 750.
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 8:
78 goes into 480 6 times with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 10816.96
If we subtract 468 from 480, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 9:
The number 78 fits into 120 1 times, leaving a remainder of 42.
The number 1 becomes the next digit in our result. 
Result so far: 10816.961
Subtracting 78 from 120 leaves us 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.

Let's proceed to step 10:
If we divide 420 by 78, we get 5 and a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 10816.9615
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.

Step 11:
78 goes into 300 3 times with a remainder of 66.
The number 3 becomes the next digit in our result. 
Result so far: 10816.96153
If we subtract 234 from 300, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 12:
If we divide 660 by 78, we get 8 and a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 10816.961538
If we take 624 away from 660, we end up 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.

Advancing to step 13:
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: 10816.9615384
If we take 312 away from 360, we end up 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.

Step 14:
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: 10816.96153846
If we subtract 468 from 480, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Our division results in 10816.96153846 with a remaining 1.2e-08.