We're dividing 163445 by 53 
The aim is to understand the frequency of 53 in 163445.

Step 1:
The number 53 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 53

Going ahead to step 2:
16 divided by 53 is 0 with a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 16 and we're left with 16.
Bring next digit (3) of the dividend behind the 16 and repeat the process: 163 / 53

Going ahead to step 3:
When dividing 163 by 53, we get 3 with a remainder of 4.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 159 from 163, we get 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 53

Advancing to step 4:
53 can be fit into 44 0 times, resulting in a remainder of 44.
Put 0 as the next digit of the answer. 
Result so far: 30.0
If we take 0 away from 44, we end up with 44.
Bring next digit (4) of the dividend behind the 44 and repeat the process: 444 / 53

Moving on to step 5:
The number 53 fits into 444 8 times, leaving a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 308.0
Deduct 424 from 444 and we're left with 20.
Take the next digit (5) from the dividend and append it to 20, then repeat: 205 / 53

On to step 6:
53 can be fit into 205 3 times, resulting in a remainder of 46.
Put 3 as the next digit of the answer. 
Result so far: 3083.0
Deduct 159 from 205 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 7:
If we divide 460 by 53, we get 8 and a remainder of 36.
The number 8 becomes the next digit in our result. 
Result so far: 3083.8
The remainder is 36 after subtracting 424 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 8:
When dividing 360 by 53, we get 6 with a remainder of 42.
Put 6 as the next digit of the answer. 
Result so far: 3083.86
Subtracting 318 from 360 leaves us 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.

Let's proceed to step 9:
The number 53 fits into 420 7 times, leaving a remainder of 49.
The number 7 becomes the next digit in our result. 
Result so far: 3083.867
The remainder is 49 after subtracting 371 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 10:
53 goes into 490 9 times with a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 3083.8679
If we take 477 away from 490, we end up 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.

Moving on to step 11:
When dividing 130 by 53, we get 2 with a remainder of 24.
The number 2 becomes the next digit in our result. 
Result so far: 3083.86792
Subtracting 106 from 130 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 12:
53 can be fit into 240 4 times, resulting in a remainder of 28.
Write down 4 as next digit of the result. 
Result so far: 3083.867924
Deduct 212 from 240 and we're left 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 13:
When dividing 280 by 53, we get 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 3083.8679245
Deduct 265 from 280 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 14:
When dividing 150 by 53, we get 2 with a remainder of 44.
Record the quotient 2 as the next digit in the result. 
Result so far: 3083.86792452
Subtracting 106 from 150 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

The final outcome is 3083.86792452, with a leftover of 4.4e-08.