16639784 divided by 72 
The aim is to understand the frequency of 72 in 16639784.

Let's proceed to step 1:
The number 72 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 72

On to step 2:
The number 72 fits into 16 0 times, leaving a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Bring next digit (6) of the dividend behind the 16 and repeat the process: 166 / 72

Going ahead to step 3:
72 goes into 166 2 times with a remainder of 22.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 144 away from 166, we end up with 22.
Grab the next digit (3) from the dividend, add it to 22, then carry on: 223 / 72

Moving on to step 4:
223 divided by 72 is 3 with a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
Subtract 216 from 223 to get 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 72

On to step 5:
When dividing 79 by 72, we get 1 with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 231.0
Subtract 72 from 79 to get 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 72

Moving on to step 6:
The number 72 fits into 77 1 times, leaving a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 2311.0
Subtracting 72 from 77 leaves us with 5.
Fetch the next digit (8) from the dividend, attach it to 5 and continue: 58 / 72

Advancing to step 7:
The number 72 fits into 58 0 times, leaving a remainder of 58.
Record the quotient 0 as the next digit in the result. 
Result so far: 23110.0
Subtracting 0 from 58 leaves us with 58.
Grab the next digit (4) from the dividend, add it to 58, then carry on: 584 / 72

Let's proceed to step 8:
584 divided by 72 is 8 with a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 231108.0
If we take 576 away from 584, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
72 goes into 80 1 times with a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 231108.1
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 10:
The number 72 fits into 80 1 times, leaving a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 231108.11
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.

In conclusion, the division gives 231108.11 with a balance of 0.008.