We look at the division of 355158 by 53 
The aim is to understand the frequency of 53 in 355158.

Advancing to step 1:
If we divide 3 by 53, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 53

Moving on to step 2:
The number 53 fits into 35 0 times, leaving a remainder of 35.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 35 leaves us with 35.
Append the next digit (5) from the dividend to 35 and continue with: 355 / 53

On to step 3:
If we divide 355 by 53, we get 6 and a remainder of 37.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Deduct 318 from 355 and we're left with 37.
Take the next digit (1) from the dividend and append it to 37, then repeat: 371 / 53

Going ahead to step 4:
371 divided by 53 is 7 with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 67.0
Subtracting 371 from 371 leaves us with 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 53

Let's proceed to step 5:
If we divide 5 by 53, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 670.0
The remainder is 5 after subtracting 0 from 5.
Bring next digit (8) of the dividend behind the 5 and repeat the process: 58 / 53

Advancing to step 6:
53 goes into 58 1 times with a remainder of 5.
The next digit of our result is 1. 
Result so far: 6701.0
Subtract 53 from 58 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
If we divide 50 by 53, we get 0 and a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 6701.0
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 8:
When dividing 500 by 53, we get 9 with a remainder of 23.
Put 9 as the next digit of the answer. 
Result so far: 6701.09
Subtracting 477 from 500 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 9:
When dividing 230 by 53, we get 4 with a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 6701.094
Deduct 212 from 230 and we're left 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.

Advancing to step 10:
53 goes into 180 3 times with a remainder of 21.
The next digit of our result is 3. 
Result so far: 6701.0943
Subtract 159 from 180 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 11:
53 can be fit into 210 3 times, resulting in a remainder of 51.
The number 3 becomes the next digit in our result. 
Result so far: 6701.09433
Deduct 159 from 210 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

After the division, we end up with 6701.09433 and a remainder of 5.1e-05.