We're dividing 13505409 by 489 
The aim is to understand the frequency of 489 in 13505409.

Let's proceed to step 1:
1 divided by 489 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 489

Moving on to step 2:
The number 489 fits into 13 0 times, leaving a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Grab the next digit (5) from the dividend, add it to 13, then carry on: 135 / 489

Step 3:
489 can be fit into 135 0 times, resulting in a remainder of 135.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 135 and we're left with 135.
Include the next digit (0) from the dividend after 135, then repeat: 1350 / 489

On to step 4:
489 can be fit into 1350 2 times, resulting in a remainder of 372.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 372 after subtracting 978 from 1350.
Bring next digit (5) of the dividend behind the 372 and repeat the process: 3725 / 489

Advancing to step 5:
489 goes into 3725 7 times with a remainder of 302.
The next digit of our result is 7. 
Result so far: 27.0
If we take 3423 away from 3725, we end up with 302.
Bring next digit (4) of the dividend behind the 302 and repeat the process: 3024 / 489

Moving on to step 6:
489 goes into 3024 6 times with a remainder of 90.
Write down 6 as next digit of the result. 
Result so far: 276.0
Subtracting 2934 from 3024 leaves us with 90.
Grab the next digit (0) from the dividend, add it to 90, then carry on: 900 / 489

Let's proceed to step 7:
If we divide 900 by 489, we get 1 and a remainder of 411.
Record the quotient 1 as the next digit in the result. 
Result so far: 2761.0
The remainder is 411 after subtracting 489 from 900.
Bring next digit (9) of the dividend behind the 411 and repeat the process: 4119 / 489

On to step 8:
4119 divided by 489 is 8 with a remainder of 207.
The number 8 becomes the next digit in our result. 
Result so far: 27618.0
Deduct 3912 from 4119 and we're left with 207.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2070, and continue the process.

Let's proceed to step 9:
489 goes into 2070 4 times with a remainder of 114.
Put 4 as the next digit of the answer. 
Result so far: 27618.4
The remainder is 114 after subtracting 1956 from 2070.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Step 10:
489 goes into 1140 2 times with a remainder of 162.
The number 2 becomes the next digit in our result. 
Result so far: 27618.42
Deduct 978 from 1140 and we're left with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Going ahead to step 11:
489 can be fit into 1620 3 times, resulting in a remainder of 153.
Write down 3 as next digit of the result. 
Result so far: 27618.423
Subtracting 1467 from 1620 leaves us with 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Going ahead to step 12:
If we divide 1530 by 489, we get 3 and a remainder of 63.
Write down 3 as next digit of the result. 
Result so far: 27618.4233
If we take 1467 away from 1530, we end up with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

The final outcome is 27618.4233, with a leftover of 0.00063.