653391 ÷ 79 
The aim is to understand the frequency of 79 in 653391.

Step 1:
If we divide 6 by 79, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (5) of the dividend behind the 6 and repeat the process: 65 / 79

Going ahead to step 2:
If we divide 65 by 79, we get 0 and a remainder of 65.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 65, we end up with 65.
Append the next digit (3) from the dividend to 65 and continue with: 653 / 79

Moving on to step 3:
If we divide 653 by 79, we get 8 and a remainder of 21.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 632 from 653 to get 21.
Fetch the next digit (3) from the dividend, attach it to 21 and continue: 213 / 79

Moving on to step 4:
79 can be fit into 213 2 times, resulting in a remainder of 55.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
If we subtract 158 from 213, we get 55.
Bring next digit (9) of the dividend behind the 55 and repeat the process: 559 / 79

Advancing to step 5:
79 goes into 559 7 times with a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 827.0
Subtract 553 from 559 to get 6.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 79

Going ahead to step 6:
61 divided by 79 is 0 with a remainder of 61.
Use 0 as the next digit of our solution. 
Result so far: 8270.0
Deduct 0 from 61 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Going ahead to step 7:
79 goes into 610 7 times with a remainder of 57.
Use 7 as the next digit of our solution. 
Result so far: 8270.7
The remainder is 57 after subtracting 553 from 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 8:
If we divide 570 by 79, we get 7 and a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 8270.77
The remainder is 17 after subtracting 553 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

After the division, we end up with 8270.77 and a remainder of 0.017.