We're dividing 843830 by 72 
The aim is to understand the frequency of 72 in 843830.

On to step 1:
The number 72 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 72

Advancing to step 2:
72 goes into 84 1 times with a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 72 from 84, we get 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 72

Let's proceed to step 3:
The number 72 fits into 123 1 times, leaving a remainder of 51.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
The remainder is 51 after subtracting 72 from 123.
Fetch the next digit (8) from the dividend, attach it to 51 and continue: 518 / 72

Going ahead to step 4:
If we divide 518 by 72, we get 7 and a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 117.0
If we subtract 504 from 518, we get 14.
Append the next digit (3) from the dividend to 14 and continue with: 143 / 72

Advancing to step 5:
143 divided by 72 is 1 with a remainder of 71.
Write down 1 as next digit of the result. 
Result so far: 1171.0
The remainder is 71 after subtracting 72 from 143.
Append the next digit (0) from the dividend to 71 and continue with: 710 / 72

Step 6:
If we divide 710 by 72, we get 9 and a remainder of 62.
Use 9 as the next digit of our solution. 
Result so far: 11719.0
Deduct 648 from 710 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 7:
The number 72 fits into 620 8 times, leaving a remainder of 44.
Put 8 as the next digit of the answer. 
Result so far: 11719.8
Subtracting 576 from 620 leaves us 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.

Let's proceed to step 8:
72 can be fit into 440 6 times, resulting in a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 11719.86
Subtract 432 from 440 to 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.

Going ahead to step 9:
If we divide 80 by 72, we get 1 and a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 11719.861
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.

Step 10:
72 goes into 80 1 times with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 11719.8611
Subtract 72 from 80 to 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.

The final result is 11719.8611 with a remainder of 8e-05.