730416 ÷ 81 
The aim is to understand the frequency of 81 in 730416.

Going ahead to step 1:
When dividing 7 by 81, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 81

Advancing to step 2:
73 divided by 81 is 0 with a remainder of 73.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 73 leaves us with 73.
Take the next digit (0) from the dividend and append it to 73, then repeat: 730 / 81

Moving on to step 3:
The number 81 fits into 730 9 times, leaving a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 729 from 730 to get 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 81

Going ahead to step 4:
The number 81 fits into 14 0 times, leaving a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 90.0
The remainder is 14 after subtracting 0 from 14.
Take the next digit (1) from the dividend and append it to 14, then repeat: 141 / 81

Step 5:
141 divided by 81 is 1 with a remainder of 60.
The number 1 becomes the next digit in our result. 
Result so far: 901.0
Deduct 81 from 141 and we're left with 60.
Bring next digit (6) of the dividend behind the 60 and repeat the process: 606 / 81

Going ahead to step 6:
606 divided by 81 is 7 with a remainder of 39.
Record the quotient 7 as the next digit in the result. 
Result so far: 9017.0
Subtracting 567 from 606 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 7:
The number 81 fits into 390 4 times, leaving a remainder of 66.
Use 4 as the next digit of our solution. 
Result so far: 9017.4
If we take 324 away from 390, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 8:
81 can be fit into 660 8 times, resulting in a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 9017.48
Subtracting 648 from 660 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 9:
120 divided by 81 is 1 with a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 9017.481
Subtracting 81 from 120 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Going ahead to step 10:
The number 81 fits into 390 4 times, leaving a remainder of 66.
The number 4 becomes the next digit in our result. 
Result so far: 9017.4814
The remainder is 66 after subtracting 324 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 11:
660 divided by 81 is 8 with a remainder of 12.
The next digit of our result is 8. 
Result so far: 9017.48148
If we subtract 648 from 660, we 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.

Step 12:
81 goes into 120 1 times with a remainder of 39.
Write down 1 as next digit of the result. 
Result so far: 9017.481481
Subtract 81 from 120 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 13:
When dividing 390 by 81, we get 4 with a remainder of 66.
Use 4 as the next digit of our solution. 
Result so far: 9017.4814814
Subtracting 324 from 390 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 14:
660 divided by 81 is 8 with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 9017.48148148
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.

The quotient of the division is 9017.48148148, and the remainder is 1.2e-08.