13645612 ÷ 729 
The aim is to understand the frequency of 729 in 13645612.

Step 1:
If we divide 1 by 729, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 729

Advancing to step 2:
13 divided by 729 is 0 with a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Include the next digit (6) from the dividend after 13, then repeat: 136 / 729

Advancing to step 3:
729 goes into 136 0 times with a remainder of 136.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 136 leaves us with 136.
Include the next digit (4) from the dividend after 136, then repeat: 1364 / 729

Going ahead to step 4:
729 goes into 1364 1 times with a remainder of 635.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 729 from 1364, we get 635.
Bring next digit (5) of the dividend behind the 635 and repeat the process: 6355 / 729

Going ahead to step 5:
When dividing 6355 by 729, we get 8 with a remainder of 523.
The number 8 becomes the next digit in our result. 
Result so far: 18.0
If we take 5832 away from 6355, we end up with 523.
Include the next digit (6) from the dividend after 523, then repeat: 5236 / 729

Step 6:
729 can be fit into 5236 7 times, resulting in a remainder of 133.
The next digit of our result is 7. 
Result so far: 187.0
If we subtract 5103 from 5236, we get 133.
Grab the next digit (1) from the dividend, add it to 133, then carry on: 1331 / 729

On to step 7:
1331 divided by 729 is 1 with a remainder of 602.
Put 1 as the next digit of the answer. 
Result so far: 1871.0
Subtracting 729 from 1331 leaves us with 602.
Append the next digit (2) from the dividend to 602 and continue with: 6022 / 729

Let's proceed to step 8:
The number 729 fits into 6022 8 times, leaving a remainder of 190.
Use 8 as the next digit of our solution. 
Result so far: 18718.0
If we take 5832 away from 6022, we end up with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Advancing to step 9:
729 goes into 1900 2 times with a remainder of 442.
Write down 2 as next digit of the result. 
Result so far: 18718.2
Subtract 1458 from 1900 to get 442.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4420, and continue the process.

Going ahead to step 10:
729 goes into 4420 6 times with a remainder of 46.
Put 6 as the next digit of the answer. 
Result so far: 18718.26
If we subtract 4374 from 4420, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 11:
The number 729 fits into 460 0 times, leaving a remainder of 460.
Use 0 as the next digit of our solution. 
Result so far: 18718.26
If we subtract 0 from 460, we get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Step 12:
729 goes into 4600 6 times with a remainder of 226.
The next digit of our result is 6. 
Result so far: 18718.2606
The remainder is 226 after subtracting 4374 from 4600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Going ahead to step 13:
729 goes into 2260 3 times with a remainder of 73.
The number 3 becomes the next digit in our result. 
Result so far: 18718.26063
Subtract 2187 from 2260 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Step 14:
729 can be fit into 730 1 times, resulting in a remainder of 1.
The next digit of our result is 1. 
Result so far: 18718.260631
Subtracting 729 from 730 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 15:
729 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 18718.260631
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 16:
The number 729 fits into 100 0 times, leaving a remainder of 100.
Record the quotient 0 as the next digit in the result. 
Result so far: 18718.260631
Subtracting 0 from 100 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The final result is 18718.260631 with a remainder of 1e-07.