We look at the division of 704861 by 72 
The aim is to understand the frequency of 72 in 704861.

On to step 1:
72 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 72

Moving on to step 2:
If we divide 70 by 72, we get 0 and a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 70 to get 70.
Fetch the next digit (4) from the dividend, attach it to 70 and continue: 704 / 72

On to step 3:
The number 72 fits into 704 9 times, leaving a remainder of 56.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we subtract 648 from 704, we get 56.
Bring next digit (8) of the dividend behind the 56 and repeat the process: 568 / 72

On to step 4:
The number 72 fits into 568 7 times, leaving a remainder of 64.
Record the quotient 7 as the next digit in the result. 
Result so far: 97.0
Deduct 504 from 568 and we're left with 64.
Grab the next digit (6) from the dividend, add it to 64, then carry on: 646 / 72

Moving on to step 5:
72 goes into 646 8 times with a remainder of 70.
The number 8 becomes the next digit in our result. 
Result so far: 978.0
Deduct 576 from 646 and we're left with 70.
Take the next digit (1) from the dividend and append it to 70, then repeat: 701 / 72

Going ahead to step 6:
The number 72 fits into 701 9 times, leaving a remainder of 53.
The next digit of our result is 9. 
Result so far: 9789.0
If we subtract 648 from 701, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 7:
The number 72 fits into 530 7 times, leaving a remainder of 26.
Use 7 as the next digit of our solution. 
Result so far: 9789.7
Deduct 504 from 530 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 8:
When dividing 260 by 72, we get 3 with a remainder of 44.
Put 3 as the next digit of the answer. 
Result so far: 9789.73
If we take 216 away from 260, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 9:
72 can be fit into 440 6 times, resulting in a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 9789.736
The remainder is 8 after subtracting 432 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 10:
72 can be fit into 80 1 times, resulting in a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 9789.7361
If we subtract 72 from 80, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 11:
72 goes into 80 1 times with a remainder of 8.
The next digit of our result is 1. 
Result so far: 9789.73611
If we subtract 72 from 80, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 9789.73611 with a remaining 8e-06.