We're dividing 735943 by 78 
The aim is to understand the frequency of 78 in 735943.

On to step 1:
7 divided by 78 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (3) of the dividend behind the 7 and repeat the process: 73 / 78

On to step 2:
78 goes into 73 0 times with a remainder of 73.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 73 leaves us with 73.
Grab the next digit (5) from the dividend, add it to 73, then carry on: 735 / 78

Step 3:
When dividing 735 by 78, we get 9 with a remainder of 33.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we subtract 702 from 735, we get 33.
Fetch the next digit (9) from the dividend, attach it to 33 and continue: 339 / 78

Advancing to step 4:
If we divide 339 by 78, we get 4 and a remainder of 27.
Record the quotient 4 as the next digit in the result. 
Result so far: 94.0
Subtracting 312 from 339 leaves us with 27.
Bring next digit (4) of the dividend behind the 27 and repeat the process: 274 / 78

Moving on to step 5:
When dividing 274 by 78, we get 3 with a remainder of 40.
The next digit of our result is 3. 
Result so far: 943.0
If we take 234 away from 274, we end up with 40.
Take the next digit (3) from the dividend and append it to 40, then repeat: 403 / 78

Step 6:
When dividing 403 by 78, we get 5 with a remainder of 13.
Record the quotient 5 as the next digit in the result. 
Result so far: 9435.0
If we take 390 away from 403, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 7:
78 can be fit into 130 1 times, resulting in a remainder of 52.
The next digit of our result is 1. 
Result so far: 9435.1
The remainder is 52 after subtracting 78 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 8:
78 can be fit into 520 6 times, resulting in a remainder of 52.
The next digit of our result is 6. 
Result so far: 9435.16
If we subtract 468 from 520, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 9:
The number 78 fits into 520 6 times, leaving a remainder of 52.
The number 6 becomes the next digit in our result. 
Result so far: 9435.166
Subtract 468 from 520 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final outcome is 9435.166, with a leftover of 0.0052.