Let's divide 859643 by 78
The aim is to understand the frequency of 78 in 859643.

Advancing to step 1:
78 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 78

Advancing to step 2:
When dividing 85 by 78, we get 1 with a remainder of 7.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 78 from 85, we get 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 78

On to step 3:
The number 78 fits into 79 1 times, leaving a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Subtracting 78 from 79 leaves us with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 78

On to step 4:
78 can be fit into 16 0 times, resulting in a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 110.0
The remainder is 16 after subtracting 0 from 16.
Fetch the next digit (4) from the dividend, attach it to 16 and continue: 164 / 78

Going ahead to step 5:
If we divide 164 by 78, we get 2 and a remainder of 8.
The next digit of our result is 2. 
Result so far: 1102.0
If we take 156 away from 164, we end up with 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 78

Let's proceed to step 6:
The number 78 fits into 83 1 times, leaving a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 11021.0
The remainder is 5 after subtracting 78 from 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
78 can be fit into 50 0 times, resulting in a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 11021.0
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 8:
If we divide 500 by 78, we get 6 and a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 11021.06
Subtract 468 from 500 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 9:
If we divide 320 by 78, we get 4 and a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 11021.064
The remainder is 8 after subtracting 312 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
If we divide 80 by 78, we get 1 and a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 11021.0641
Subtract 78 from 80 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 11:
The number 78 fits into 20 0 times, leaving a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 11021.0641
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 12:
If we divide 200 by 78, we get 2 and a remainder of 44.
Write down 2 as next digit of the result. 
Result so far: 11021.064102
If we subtract 156 from 200, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 13:
When dividing 440 by 78, we get 5 with a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 11021.0641025
If we subtract 390 from 440, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 14:
78 can be fit into 500 6 times, resulting in a remainder of 32.
Use 6 as the next digit of our solution. 
Result so far: 11021.06410256
The remainder is 32 after subtracting 468 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The quotient of the division is 11021.06410256, and the remainder is 3.2e-08.