28180419 ÷ 729 
The aim is to understand the frequency of 729 in 28180419.

Step 1:
2 divided by 729 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 729

Step 2:
The number 729 fits into 28 0 times, leaving a remainder of 28.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 28, we end up with 28.
Take the next digit (1) from the dividend and append it to 28, then repeat: 281 / 729

Advancing to step 3:
281 divided by 729 is 0 with a remainder of 281.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 281 after subtracting 0 from 281.
Append the next digit (8) from the dividend to 281 and continue with: 2818 / 729

Let's proceed to step 4:
729 goes into 2818 3 times with a remainder of 631.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 2187 from 2818 and we're left with 631.
Take the next digit (0) from the dividend and append it to 631, then repeat: 6310 / 729

Going ahead to step 5:
6310 divided by 729 is 8 with a remainder of 478.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
Subtract 5832 from 6310 to get 478.
Take the next digit (4) from the dividend and append it to 478, then repeat: 4784 / 729

Let's proceed to step 6:
729 goes into 4784 6 times with a remainder of 410.
Record the quotient 6 as the next digit in the result. 
Result so far: 386.0
Subtracting 4374 from 4784 leaves us with 410.
Include the next digit (1) from the dividend after 410, then repeat: 4101 / 729

Let's proceed to step 7:
The number 729 fits into 4101 5 times, leaving a remainder of 456.
Write down 5 as next digit of the result. 
Result so far: 3865.0
If we subtract 3645 from 4101, we get 456.
Append the next digit (9) from the dividend to 456 and continue with: 4569 / 729

Let's proceed to step 8:
When dividing 4569 by 729, we get 6 with a remainder of 195.
Write down 6 as next digit of the result. 
Result so far: 38656.0
Deduct 4374 from 4569 and we're left with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Let's proceed to step 9:
If we divide 1950 by 729, we get 2 and a remainder of 492.
Record the quotient 2 as the next digit in the result. 
Result so far: 38656.2
The remainder is 492 after subtracting 1458 from 1950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

Let's proceed to step 10:
729 goes into 4920 6 times with a remainder of 546.
The number 6 becomes the next digit in our result. 
Result so far: 38656.26
The remainder is 546 after subtracting 4374 from 4920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

Step 11:
When dividing 5460 by 729, we get 7 with a remainder of 357.
Use 7 as the next digit of our solution. 
Result so far: 38656.267
Deduct 5103 from 5460 and we're left with 357.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3570, and continue the process.

Moving on to step 12:
729 can be fit into 3570 4 times, resulting in a remainder of 654.
Record the quotient 4 as the next digit in the result. 
Result so far: 38656.2674
Subtracting 2916 from 3570 leaves us with 654.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6540, and continue the process.

Going ahead to step 13:
If we divide 6540 by 729, we get 8 and a remainder of 708.
The next digit of our result is 8. 
Result so far: 38656.26748
Subtract 5832 from 6540 to get 708.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7080, and continue the process.

Moving on to step 14:
If we divide 7080 by 729, we get 9 and a remainder of 519.
Put 9 as the next digit of the answer. 
Result so far: 38656.267489
If we subtract 6561 from 7080, we get 519.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5190, and continue the process.

Moving on to step 15:
729 goes into 5190 7 times with a remainder of 87.
The next digit of our result is 7. 
Result so far: 38656.2674897
Deduct 5103 from 5190 and we're left with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Step 16:
729 goes into 870 1 times with a remainder of 141.
The number 1 becomes the next digit in our result. 
Result so far: 38656.26748971
The remainder is 141 after subtracting 729 from 870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

The quotient of the division is 38656.26748971, and the remainder is 1.41e-07.