21368068 divided by 489 
The aim is to understand the frequency of 489 in 21368068.

Moving on to step 1:
2 divided by 489 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 489

Going ahead to step 2:
The number 489 fits into 21 0 times, leaving a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Grab the next digit (3) from the dividend, add it to 21, then carry on: 213 / 489

On to step 3:
The number 489 fits into 213 0 times, leaving a remainder of 213.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 213 after subtracting 0 from 213.
Grab the next digit (6) from the dividend, add it to 213, then carry on: 2136 / 489

Step 4:
489 goes into 2136 4 times with a remainder of 180.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 1956 away from 2136, we end up with 180.
Grab the next digit (8) from the dividend, add it to 180, then carry on: 1808 / 489

Step 5:
If we divide 1808 by 489, we get 3 and a remainder of 341.
Record the quotient 3 as the next digit in the result. 
Result so far: 43.0
Subtract 1467 from 1808 to get 341.
Include the next digit (0) from the dividend after 341, then repeat: 3410 / 489

Let's proceed to step 6:
3410 divided by 489 is 6 with a remainder of 476.
Put 6 as the next digit of the answer. 
Result so far: 436.0
If we subtract 2934 from 3410, we get 476.
Append the next digit (6) from the dividend to 476 and continue with: 4766 / 489

On to step 7:
489 can be fit into 4766 9 times, resulting in a remainder of 365.
The next digit of our result is 9. 
Result so far: 4369.0
Subtract 4401 from 4766 to get 365.
Take the next digit (8) from the dividend and append it to 365, then repeat: 3658 / 489

Moving on to step 8:
When dividing 3658 by 489, we get 7 with a remainder of 235.
Put 7 as the next digit of the answer. 
Result so far: 43697.0
Subtracting 3423 from 3658 leaves us with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Going ahead to step 9:
489 goes into 2350 4 times with a remainder of 394.
The number 4 becomes the next digit in our result. 
Result so far: 43697.4
Subtracting 1956 from 2350 leaves us with 394.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

Let's proceed to step 10:
When dividing 3940 by 489, we get 8 with a remainder of 28.
The next digit of our result is 8. 
Result so far: 43697.48
If we subtract 3912 from 3940, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 11:
280 divided by 489 is 0 with a remainder of 280.
Put 0 as the next digit of the answer. 
Result so far: 43697.48
Subtracting 0 from 280 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Step 12:
When dividing 2800 by 489, we get 5 with a remainder of 355.
Use 5 as the next digit of our solution. 
Result so far: 43697.4805
Subtract 2445 from 2800 to get 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

On to step 13:
When dividing 3550 by 489, we get 7 with a remainder of 127.
Use 7 as the next digit of our solution. 
Result so far: 43697.48057
Deduct 3423 from 3550 and we're left with 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

On to step 14:
489 goes into 1270 2 times with a remainder of 292.
Put 2 as the next digit of the answer. 
Result so far: 43697.480572
If we subtract 978 from 1270, we get 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

On to step 15:
When dividing 2920 by 489, we get 5 with a remainder of 475.
Write down 5 as next digit of the result. 
Result so far: 43697.4805725
Subtracting 2445 from 2920 leaves us with 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

Moving on to step 16:
The number 489 fits into 4750 9 times, leaving a remainder of 349.
Use 9 as the next digit of our solution. 
Result so far: 43697.48057259
Subtracting 4401 from 4750 leaves us with 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

The final result is 43697.48057259 with a remainder of 3.49e-07.