We're dividing 66030991 by 729 
The aim is to understand the frequency of 729 in 66030991.

Going ahead to step 1:
The number 729 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 729

Advancing to step 2:
729 can be fit into 66 0 times, resulting in a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Append the next digit (0) from the dividend to 66 and continue with: 660 / 729

Moving on to step 3:
When dividing 660 by 729, we get 0 with a remainder of 660.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 660, we get 660.
Fetch the next digit (3) from the dividend, attach it to 660 and continue: 6603 / 729

Advancing to step 4:
The number 729 fits into 6603 9 times, leaving a remainder of 42.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtracting 6561 from 6603 leaves us with 42.
Bring next digit (0) of the dividend behind the 42 and repeat the process: 420 / 729

Going ahead to step 5:
729 can be fit into 420 0 times, resulting in a remainder of 420.
Record the quotient 0 as the next digit in the result. 
Result so far: 90.0
If we subtract 0 from 420, we get 420.
Include the next digit (9) from the dividend after 420, then repeat: 4209 / 729

Advancing to step 6:
4209 divided by 729 is 5 with a remainder of 564.
The next digit of our result is 5. 
Result so far: 905.0
Subtract 3645 from 4209 to get 564.
Fetch the next digit (9) from the dividend, attach it to 564 and continue: 5649 / 729

Step 7:
729 goes into 5649 7 times with a remainder of 546.
The next digit of our result is 7. 
Result so far: 9057.0
The remainder is 546 after subtracting 5103 from 5649.
Append the next digit (1) from the dividend to 546 and continue with: 5461 / 729

Step 8:
729 can be fit into 5461 7 times, resulting in a remainder of 358.
Put 7 as the next digit of the answer. 
Result so far: 90577.0
If we subtract 5103 from 5461, we get 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

Going ahead to step 9:
3580 divided by 729 is 4 with a remainder of 664.
Use 4 as the next digit of our solution. 
Result so far: 90577.4
The remainder is 664 after subtracting 2916 from 3580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6640, and continue the process.

On to step 10:
729 goes into 6640 9 times with a remainder of 79.
Record the quotient 9 as the next digit in the result. 
Result so far: 90577.49
The remainder is 79 after subtracting 6561 from 6640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Let's proceed to step 11:
790 divided by 729 is 1 with a remainder of 61.
Put 1 as the next digit of the answer. 
Result so far: 90577.491
The remainder is 61 after subtracting 729 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

On to step 12:
610 divided by 729 is 0 with a remainder of 610.
Record the quotient 0 as the next digit in the result. 
Result so far: 90577.491
Deduct 0 from 610 and we're left with 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

Let's proceed to step 13:
729 can be fit into 6100 8 times, resulting in a remainder of 268.
The next digit of our result is 8. 
Result so far: 90577.49108
Subtracting 5832 from 6100 leaves us with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Advancing to step 14:
2680 divided by 729 is 3 with a remainder of 493.
Use 3 as the next digit of our solution. 
Result so far: 90577.491083
The remainder is 493 after subtracting 2187 from 2680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4930, and continue the process.

On to step 15:
4930 divided by 729 is 6 with a remainder of 556.
Use 6 as the next digit of our solution. 
Result so far: 90577.4910836
Subtract 4374 from 4930 to get 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

Step 16:
729 goes into 5560 7 times with a remainder of 457.
The next digit of our result is 7. 
Result so far: 90577.49108367
Subtract 5103 from 5560 to get 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

The quotient of the division is 90577.49108367, and the remainder is 4.57e-07.