153421 ÷ 53 
The aim is to understand the frequency of 53 in 153421.

Advancing to step 1:
53 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 53

Let's proceed to step 2:
The number 53 fits into 15 0 times, leaving a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 53

Moving on to step 3:
53 goes into 153 2 times with a remainder of 47.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 106 from 153, we get 47.
Include the next digit (4) from the dividend after 47, then repeat: 474 / 53

Moving on to step 4:
53 can be fit into 474 8 times, resulting in a remainder of 50.
Put 8 as the next digit of the answer. 
Result so far: 28.0
The remainder is 50 after subtracting 424 from 474.
Grab the next digit (2) from the dividend, add it to 50, then carry on: 502 / 53

Going ahead to step 5:
If we divide 502 by 53, we get 9 and a remainder of 25.
Write down 9 as next digit of the result. 
Result so far: 289.0
Subtracting 477 from 502 leaves us with 25.
Take the next digit (1) from the dividend and append it to 25, then repeat: 251 / 53

Advancing to step 6:
If we divide 251 by 53, we get 4 and a remainder of 39.
Use 4 as the next digit of our solution. 
Result so far: 2894.0
Subtracting 212 from 251 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 7:
If we divide 390 by 53, we get 7 and a remainder of 19.
Write down 7 as next digit of the result. 
Result so far: 2894.7
Subtract 371 from 390 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 8:
190 divided by 53 is 3 with a remainder of 31.
Write down 3 as next digit of the result. 
Result so far: 2894.73
Deduct 159 from 190 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 9:
53 goes into 310 5 times with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 2894.735
Deduct 265 from 310 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 10:
When dividing 450 by 53, we get 8 with a remainder of 26.
The next digit of our result is 8. 
Result so far: 2894.7358
Subtracting 424 from 450 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 11:
260 divided by 53 is 4 with a remainder of 48.
Write down 4 as next digit of the result. 
Result so far: 2894.73584
Subtract 212 from 260 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 12:
The number 53 fits into 480 9 times, leaving a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 2894.735849
Subtracting 477 from 480 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 13:
30 divided by 53 is 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 2894.735849
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 14:
300 divided by 53 is 5 with a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 2894.73584905
Subtracting 265 from 300 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final outcome is 2894.73584905, with a leftover of 3.5e-08.