We look at the division of 53491978 by 489 
The aim is to understand the frequency of 489 in 53491978.

On to step 1:
489 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 489

Advancing to step 2:
489 can be fit into 53 0 times, resulting in a remainder of 53.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 53 leaves us with 53.
Include the next digit (4) from the dividend after 53, then repeat: 534 / 489

Step 3:
The number 489 fits into 534 1 times, leaving a remainder of 45.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 489 from 534 leaves us with 45.
Grab the next digit (9) from the dividend, add it to 45, then carry on: 459 / 489

Going ahead to step 4:
The number 489 fits into 459 0 times, leaving a remainder of 459.
The next digit of our result is 0. 
Result so far: 10.0
Subtract 0 from 459 to get 459.
Bring next digit (1) of the dividend behind the 459 and repeat the process: 4591 / 489

Going ahead to step 5:
The number 489 fits into 4591 9 times, leaving a remainder of 190.
The number 9 becomes the next digit in our result. 
Result so far: 109.0
If we subtract 4401 from 4591, we get 190.
Fetch the next digit (9) from the dividend, attach it to 190 and continue: 1909 / 489

On to step 6:
The number 489 fits into 1909 3 times, leaving a remainder of 442.
Put 3 as the next digit of the answer. 
Result so far: 1093.0
Subtract 1467 from 1909 to get 442.
Bring next digit (7) of the dividend behind the 442 and repeat the process: 4427 / 489

On to step 7:
When dividing 4427 by 489, we get 9 with a remainder of 26.
Use 9 as the next digit of our solution. 
Result so far: 10939.0
If we take 4401 away from 4427, we end up with 26.
Append the next digit (8) from the dividend to 26 and continue with: 268 / 489

On to step 8:
The number 489 fits into 268 0 times, leaving a remainder of 268.
The number 0 becomes the next digit in our result. 
Result so far: 109390.0
If we subtract 0 from 268, we get 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Moving on to step 9:
489 goes into 2680 5 times with a remainder of 235.
Use 5 as the next digit of our solution. 
Result so far: 109390.5
If we subtract 2445 from 2680, we get 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Moving on to step 10:
2350 divided by 489 is 4 with a remainder of 394.
Record the quotient 4 as the next digit in the result. 
Result so far: 109390.54
The remainder is 394 after subtracting 1956 from 2350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

Advancing to step 11:
489 goes into 3940 8 times with a remainder of 28.
Put 8 as the next digit of the answer. 
Result so far: 109390.548
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.

Moving on to step 12:
280 divided by 489 is 0 with a remainder of 280.
Record the quotient 0 as the next digit in the result. 
Result so far: 109390.548
If we subtract 0 from 280, we get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Going ahead to step 13:
489 can be fit into 2800 5 times, resulting in a remainder of 355.
Use 5 as the next digit of our solution. 
Result so far: 109390.54805
Subtracting 2445 from 2800 leaves us with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Advancing to step 14:
3550 divided by 489 is 7 with a remainder of 127.
Record the quotient 7 as the next digit in the result. 
Result so far: 109390.548057
If we take 3423 away from 3550, we end up 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.

Advancing to step 15:
When dividing 1270 by 489, we get 2 with a remainder of 292.
Write down 2 as next digit of the result. 
Result so far: 109390.5480572
The remainder is 292 after subtracting 978 from 1270.
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 16:
When dividing 2920 by 489, we get 5 with a remainder of 475.
The next digit of our result is 5. 
Result so far: 109390.54805725
If we take 2445 away from 2920, we end up 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.

The quotient of the division is 109390.54805725, and the remainder is 4.75e-07.