661047 ÷ 72 
The aim is to understand the frequency of 72 in 661047.

Moving on to step 1:
When dividing 6 by 72, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 72

On to step 2:
The number 72 fits into 66 0 times, leaving a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Take the next digit (1) from the dividend and append it to 66, then repeat: 661 / 72

Moving on to step 3:
When dividing 661 by 72, we get 9 with a remainder of 13.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 648 from 661, we get 13.
Fetch the next digit (0) from the dividend, attach it to 13 and continue: 130 / 72

Advancing to step 4:
If we divide 130 by 72, we get 1 and a remainder of 58.
The number 1 becomes the next digit in our result. 
Result so far: 91.0
If we take 72 away from 130, we end up with 58.
Include the next digit (4) from the dividend after 58, then repeat: 584 / 72

Step 5:
When dividing 584 by 72, we get 8 with a remainder of 8.
Record the quotient 8 as the next digit in the result. 
Result so far: 918.0
If we take 576 away from 584, we end up with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 72

On to step 6:
87 divided by 72 is 1 with a remainder of 15.
The next digit of our result is 1. 
Result so far: 9181.0
If we take 72 away from 87, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 7:
150 divided by 72 is 2 with a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 9181.2
Deduct 144 from 150 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 8:
72 can be fit into 60 0 times, resulting in a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 9181.2
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 9:
When dividing 600 by 72, we get 8 with a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 9181.208
If we take 576 away from 600, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 10:
72 can be fit into 240 3 times, resulting in a remainder of 24.
Record the quotient 3 as the next digit in the result. 
Result so far: 9181.2083
The remainder is 24 after subtracting 216 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
The number 72 fits into 240 3 times, leaving a remainder of 24.
The number 3 becomes the next digit in our result. 
Result so far: 9181.20833
If we subtract 216 from 240, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

After the division, we end up with 9181.20833 and a remainder of 2.4e-05.