We're dividing 993786 by 72 
The aim is to understand the frequency of 72 in 993786.

Going ahead to step 1:
9 divided by 72 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 72

Going ahead to step 2:
72 can be fit into 99 1 times, resulting in a remainder of 27.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 72 from 99 and we're left with 27.
Append the next digit (3) from the dividend to 27 and continue with: 273 / 72

On to step 3:
273 divided by 72 is 3 with a remainder of 57.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Subtracting 216 from 273 leaves us with 57.
Grab the next digit (7) from the dividend, add it to 57, then carry on: 577 / 72

On to step 4:
When dividing 577 by 72, we get 8 with a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 138.0
Subtract 576 from 577 to get 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 72

Step 5:
72 goes into 18 0 times with a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 1380.0
Subtract 0 from 18 to get 18.
Grab the next digit (6) from the dividend, add it to 18, then carry on: 186 / 72

Step 6:
72 can be fit into 186 2 times, resulting in a remainder of 42.
Write down 2 as next digit of the result. 
Result so far: 13802.0
If we take 144 away from 186, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 7:
72 goes into 420 5 times with a remainder of 60.
Put 5 as the next digit of the answer. 
Result so far: 13802.5
Subtracting 360 from 420 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 8:
The number 72 fits into 600 8 times, leaving a remainder of 24.
The next digit of our result is 8. 
Result so far: 13802.58
Subtracting 576 from 600 leaves us 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.

Moving on to step 9:
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: 13802.583
If we take 216 away from 240, 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.

On to step 10:
When dividing 240 by 72, we get 3 with a remainder of 24.
Use 3 as the next digit of our solution. 
Result so far: 13802.5833
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.

The final outcome is 13802.5833, with a leftover of 0.00024.