Let's divide 217072 by 78
The aim is to understand the frequency of 78 in 217072.

Going ahead to step 1:
78 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 78

Going ahead to step 2:
The number 78 fits into 21 0 times, leaving a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Append the next digit (7) from the dividend to 21 and continue with: 217 / 78

Advancing to step 3:
78 goes into 217 2 times with a remainder of 61.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 61 after subtracting 156 from 217.
Include the next digit (0) from the dividend after 61, then repeat: 610 / 78

Going ahead to step 4:
If we divide 610 by 78, we get 7 and a remainder of 64.
The next digit of our result is 7. 
Result so far: 27.0
If we take 546 away from 610, we end up with 64.
Grab the next digit (7) from the dividend, add it to 64, then carry on: 647 / 78

Let's proceed to step 5:
The number 78 fits into 647 8 times, leaving a remainder of 23.
Use 8 as the next digit of our solution. 
Result so far: 278.0
Deduct 624 from 647 and we're left with 23.
Include the next digit (2) from the dividend after 23, then repeat: 232 / 78

Step 6:
When dividing 232 by 78, we get 2 with a remainder of 76.
Use 2 as the next digit of our solution. 
Result so far: 2782.0
Deduct 156 from 232 and we're left 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.

Step 7:
760 divided by 78 is 9 with a remainder of 58.
Record the quotient 9 as the next digit in the result. 
Result so far: 2782.9
Subtracting 702 from 760 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 8:
If we divide 580 by 78, we get 7 and a remainder of 34.
Put 7 as the next digit of the answer. 
Result so far: 2782.97
The remainder is 34 after subtracting 546 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 9:
If we divide 340 by 78, we get 4 and a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 2782.974
The remainder is 28 after subtracting 312 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 10:
When dividing 280 by 78, we get 3 with a remainder of 46.
Put 3 as the next digit of the answer. 
Result so far: 2782.9743
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 11:
78 can be fit into 460 5 times, resulting in a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 2782.97435
The remainder is 70 after subtracting 390 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 12:
If we divide 700 by 78, we get 8 and a remainder of 76.
Write down 8 as next digit of the result. 
Result so far: 2782.974358
The remainder is 76 after subtracting 624 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 13:
78 goes into 760 9 times with a remainder of 58.
Record the quotient 9 as the next digit in the result. 
Result so far: 2782.9743589
If we take 702 away from 760, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 14:
78 goes into 580 7 times with a remainder of 34.
The next digit of our result is 7. 
Result so far: 2782.97435897
If we subtract 546 from 580, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

In conclusion, the division gives 2782.97435897 with a balance of 3.4e-08.