We look at the division of 77645985 by 729 
The aim is to understand the frequency of 729 in 77645985.

Going ahead to step 1:
729 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 729

Let's proceed to step 2:
The number 729 fits into 77 0 times, leaving a remainder of 77.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 77 to get 77.
Bring next digit (6) of the dividend behind the 77 and repeat the process: 776 / 729

Let's proceed to step 3:
776 divided by 729 is 1 with a remainder of 47.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 47 after subtracting 729 from 776.
Take the next digit (4) from the dividend and append it to 47, then repeat: 474 / 729

Step 4:
If we divide 474 by 729, we get 0 and a remainder of 474.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we take 0 away from 474, we end up with 474.
Grab the next digit (5) from the dividend, add it to 474, then carry on: 4745 / 729

Advancing to step 5:
When dividing 4745 by 729, we get 6 with a remainder of 371.
Record the quotient 6 as the next digit in the result. 
Result so far: 106.0
Deduct 4374 from 4745 and we're left with 371.
Take the next digit (9) from the dividend and append it to 371, then repeat: 3719 / 729

Step 6:
3719 divided by 729 is 5 with a remainder of 74.
The number 5 becomes the next digit in our result. 
Result so far: 1065.0
If we subtract 3645 from 3719, we get 74.
Append the next digit (8) from the dividend to 74 and continue with: 748 / 729

Advancing to step 7:
748 divided by 729 is 1 with a remainder of 19.
The next digit of our result is 1. 
Result so far: 10651.0
If we subtract 729 from 748, we get 19.
Include the next digit (5) from the dividend after 19, then repeat: 195 / 729

Moving on to step 8:
195 divided by 729 is 0 with a remainder of 195.
The next digit of our result is 0. 
Result so far: 106510.0
Deduct 0 from 195 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.

On to step 9:
When dividing 1950 by 729, we get 2 with a remainder of 492.
Use 2 as the next digit of our solution. 
Result so far: 106510.2
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.

Moving on to step 10:
729 can be fit into 4920 6 times, resulting in a remainder of 546.
The next digit of our result is 6. 
Result so far: 106510.26
Deduct 4374 from 4920 and we're left with 546.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

On to step 11:
729 goes into 5460 7 times with a remainder of 357.
Write down 7 as next digit of the result. 
Result so far: 106510.267
Subtracting 5103 from 5460 leaves us 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.

Step 12:
The number 729 fits into 3570 4 times, leaving a remainder of 654.
Write down 4 as next digit of the result. 
Result so far: 106510.2674
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.

Let's proceed to step 13:
729 can be fit into 6540 8 times, resulting in a remainder of 708.
Put 8 as the next digit of the answer. 
Result so far: 106510.26748
Subtracting 5832 from 6540 leaves us with 708.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7080, and continue the process.

Advancing to step 14:
When dividing 7080 by 729, we get 9 with a remainder of 519.
Record the quotient 9 as the next digit in the result. 
Result so far: 106510.267489
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.

On to step 15:
When dividing 5190 by 729, we get 7 with a remainder of 87.
Use 7 as the next digit of our solution. 
Result so far: 106510.2674897
If we subtract 5103 from 5190, we get 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 can be fit into 870 1 times, resulting in a remainder of 141.
Use 1 as the next digit of our solution. 
Result so far: 106510.26748971
If we subtract 729 from 870, we get 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

The final result is 106510.26748971 with a remainder of 1.41e-07.