We look at the division of 897803 by 53 
The aim is to understand the frequency of 53 in 897803.

Going ahead to step 1:
The number 53 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 53

Step 2:
The number 53 fits into 89 1 times, leaving a remainder of 36.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 53 away from 89, we end up with 36.
Bring next digit (7) of the dividend behind the 36 and repeat the process: 367 / 53

Advancing to step 3:
The number 53 fits into 367 6 times, leaving a remainder of 49.
Put 6 as the next digit of the answer. 
Result so far: 16.0
Deduct 318 from 367 and we're left with 49.
Include the next digit (8) from the dividend after 49, then repeat: 498 / 53

Moving on to step 4:
53 goes into 498 9 times with a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 169.0
Deduct 477 from 498 and we're left with 21.
Fetch the next digit (0) from the dividend, attach it to 21 and continue: 210 / 53

Advancing to step 5:
210 divided by 53 is 3 with a remainder of 51.
Record the quotient 3 as the next digit in the result. 
Result so far: 1693.0
If we subtract 159 from 210, we get 51.
Fetch the next digit (3) from the dividend, attach it to 51 and continue: 513 / 53

Going ahead to step 6:
The number 53 fits into 513 9 times, leaving a remainder of 36.
The number 9 becomes the next digit in our result. 
Result so far: 16939.0
If we take 477 away from 513, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 7:
53 can be fit into 360 6 times, resulting in a remainder of 42.
Put 6 as the next digit of the answer. 
Result so far: 16939.6
Deduct 318 from 360 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 8:
53 can be fit into 420 7 times, resulting in a remainder of 49.
The number 7 becomes the next digit in our result. 
Result so far: 16939.67
Deduct 371 from 420 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 9:
53 goes into 490 9 times with a remainder of 13.
Record the quotient 9 as the next digit in the result. 
Result so far: 16939.679
Subtracting 477 from 490 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 10:
If we divide 130 by 53, we get 2 and a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 16939.6792
The remainder is 24 after subtracting 106 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 11:
The number 53 fits into 240 4 times, leaving a remainder of 28.
Put 4 as the next digit of the answer. 
Result so far: 16939.67924
Subtracting 212 from 240 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 12:
280 divided by 53 is 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 16939.679245
The remainder is 15 after subtracting 265 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 13:
53 goes into 150 2 times with a remainder of 44.
The number 2 becomes the next digit in our result. 
Result so far: 16939.6792452
Subtract 106 from 150 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 14:
440 divided by 53 is 8 with a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 16939.67924528
Subtract 424 from 440 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

After the division, we end up with 16939.67924528 and a remainder of 1.6e-08.