We look at the division of 15389337 by 489 
The aim is to understand the frequency of 489 in 15389337.

On to step 1:
If we divide 1 by 489, 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.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 489

Advancing to step 2:
When dividing 15 by 489, we get 0 with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Take the next digit (3) from the dividend and append it to 15, then repeat: 153 / 489

On to step 3:
153 divided by 489 is 0 with a remainder of 153.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 153, we end up with 153.
Fetch the next digit (8) from the dividend, attach it to 153 and continue: 1538 / 489

Let's proceed to step 4:
1538 divided by 489 is 3 with a remainder of 71.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 1467 away from 1538, we end up with 71.
Fetch the next digit (9) from the dividend, attach it to 71 and continue: 719 / 489

Step 5:
When dividing 719 by 489, we get 1 with a remainder of 230.
The next digit of our result is 1. 
Result so far: 31.0
The remainder is 230 after subtracting 489 from 719.
Grab the next digit (3) from the dividend, add it to 230, then carry on: 2303 / 489

Step 6:
489 goes into 2303 4 times with a remainder of 347.
Use 4 as the next digit of our solution. 
Result so far: 314.0
Subtracting 1956 from 2303 leaves us with 347.
Fetch the next digit (3) from the dividend, attach it to 347 and continue: 3473 / 489

Step 7:
489 can be fit into 3473 7 times, resulting in a remainder of 50.
The number 7 becomes the next digit in our result. 
Result so far: 3147.0
Deduct 3423 from 3473 and we're left with 50.
Fetch the next digit (7) from the dividend, attach it to 50 and continue: 507 / 489

Step 8:
The number 489 fits into 507 1 times, leaving a remainder of 18.
The next digit of our result is 1. 
Result so far: 31471.0
If we take 489 away from 507, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 9:
The number 489 fits into 180 0 times, leaving a remainder of 180.
Put 0 as the next digit of the answer. 
Result so far: 31471.0
If we subtract 0 from 180, we get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Advancing to step 10:
489 goes into 1800 3 times with a remainder of 333.
Use 3 as the next digit of our solution. 
Result so far: 31471.03
If we take 1467 away from 1800, we end up with 333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

On to step 11:
The number 489 fits into 3330 6 times, leaving a remainder of 396.
Put 6 as the next digit of the answer. 
Result so far: 31471.036
Subtract 2934 from 3330 to get 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Moving on to step 12:
489 can be fit into 3960 8 times, resulting in a remainder of 48.
Write down 8 as next digit of the result. 
Result so far: 31471.0368
Subtract 3912 from 3960 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 13:
489 goes into 480 0 times with a remainder of 480.
Record the quotient 0 as the next digit in the result. 
Result so far: 31471.0368
Deduct 0 from 480 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 14:
4800 divided by 489 is 9 with a remainder of 399.
Use 9 as the next digit of our solution. 
Result so far: 31471.036809
If we take 4401 away from 4800, we end up with 399.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3990, and continue the process.

Step 15:
489 can be fit into 3990 8 times, resulting in a remainder of 78.
Write down 8 as next digit of the result. 
Result so far: 31471.0368098
If we subtract 3912 from 3990, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 16:
489 goes into 780 1 times with a remainder of 291.
Use 1 as the next digit of our solution. 
Result so far: 31471.03680981
Subtracting 489 from 780 leaves us with 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

After the division, we end up with 31471.03680981 and a remainder of 2.91e-07.