We look at the division of 202100 by 42 
The aim is to understand the frequency of 42 in 202100.

Going ahead to step 1:
When dividing 2 by 42, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 42

Moving on to step 2:
20 divided by 42 is 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 20, we end up with 20.
Take the next digit (2) from the dividend and append it to 20, then repeat: 202 / 42

Step 3:
42 can be fit into 202 4 times, resulting in a remainder of 34.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 168 from 202 to get 34.
Append the next digit (1) from the dividend to 34 and continue with: 341 / 42

Let's proceed to step 4:
The number 42 fits into 341 8 times, leaving a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 48.0
Subtract 336 from 341 to get 5.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 42

Advancing to step 5:
42 goes into 50 1 times with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 481.0
The remainder is 8 after subtracting 42 from 50.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 42

On to step 6:
42 can be fit into 80 1 times, resulting in a remainder of 38.
Put 1 as the next digit of the answer. 
Result so far: 4811.0
Deduct 42 from 80 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 7:
380 divided by 42 is 9 with a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 4811.9
If we take 378 away from 380, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 8:
42 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 4811.9
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 9:
200 divided by 42 is 4 with a remainder of 32.
Put 4 as the next digit of the answer. 
Result so far: 4811.904
Subtract 168 from 200 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 10:
42 can be fit into 320 7 times, resulting in a remainder of 26.
Put 7 as the next digit of the answer. 
Result so far: 4811.9047
The remainder is 26 after subtracting 294 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 11:
If we divide 260 by 42, we get 6 and a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 4811.90476
Deduct 252 from 260 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 12:
80 divided by 42 is 1 with a remainder of 38.
Use 1 as the next digit of our solution. 
Result so far: 4811.904761
The remainder is 38 after subtracting 42 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 13:
42 goes into 380 9 times with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 4811.9047619
Deduct 378 from 380 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 14:
20 divided by 42 is 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 4811.9047619
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 4811.9047619 with a balance of 2e-08.