611121 ÷ 72 
The aim is to understand the frequency of 72 in 611121.

Let's proceed to step 1:
When dividing 6 by 72, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 72

Step 2:
If we divide 61 by 72, we get 0 and a remainder of 61.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 61 to get 61.
Include the next digit (1) from the dividend after 61, then repeat: 611 / 72

Step 3:
If we divide 611 by 72, we get 8 and a remainder of 35.
The next digit of our result is 8. 
Result so far: 8.0
If we subtract 576 from 611, we get 35.
Take the next digit (1) from the dividend and append it to 35, then repeat: 351 / 72

Moving on to step 4:
If we divide 351 by 72, we get 4 and a remainder of 63.
Use 4 as the next digit of our solution. 
Result so far: 84.0
Deduct 288 from 351 and we're left with 63.
Take the next digit (2) from the dividend and append it to 63, then repeat: 632 / 72

Going ahead to step 5:
The number 72 fits into 632 8 times, leaving a remainder of 56.
Use 8 as the next digit of our solution. 
Result so far: 848.0
Subtract 576 from 632 to get 56.
Bring next digit (1) of the dividend behind the 56 and repeat the process: 561 / 72

Let's proceed to step 6:
72 goes into 561 7 times with a remainder of 57.
Put 7 as the next digit of the answer. 
Result so far: 8487.0
Subtract 504 from 561 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 7:
72 goes into 570 7 times with a remainder of 66.
The number 7 becomes the next digit in our result. 
Result so far: 8487.7
The remainder is 66 after subtracting 504 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 8:
When dividing 660 by 72, we get 9 with a remainder of 12.
Write down 9 as next digit of the result. 
Result so far: 8487.79
Subtract 648 from 660 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 9:
If we divide 120 by 72, we get 1 and a remainder of 48.
The number 1 becomes the next digit in our result. 
Result so far: 8487.791
The remainder is 48 after subtracting 72 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 10:
480 divided by 72 is 6 with a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 8487.7916
If we take 432 away from 480, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 11:
72 goes into 480 6 times with a remainder of 48.
Put 6 as the next digit of the answer. 
Result so far: 8487.79166
Subtracting 432 from 480 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

In conclusion, the division gives 8487.79166 with a balance of 4.8e-05.