Let's divide 563809 by 42
The aim is to understand the frequency of 42 in 563809.

Going ahead to step 1:
5 divided by 42 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (6) of the dividend behind the 5 and repeat the process: 56 / 42

Moving on to step 2:
42 goes into 56 1 times with a remainder of 14.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 42 from 56, we get 14.
Include the next digit (3) from the dividend after 14, then repeat: 143 / 42

Advancing to step 3:
42 goes into 143 3 times with a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we take 126 away from 143, we end up with 17.
Append the next digit (8) from the dividend to 17 and continue with: 178 / 42

On to step 4:
178 divided by 42 is 4 with a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 134.0
Deduct 168 from 178 and we're left with 10.
Take the next digit (0) from the dividend and append it to 10, then repeat: 100 / 42

Step 5:
The number 42 fits into 100 2 times, leaving a remainder of 16.
Record the quotient 2 as the next digit in the result. 
Result so far: 1342.0
If we take 84 away from 100, we end up with 16.
Bring next digit (9) of the dividend behind the 16 and repeat the process: 169 / 42

Moving on to step 6:
When dividing 169 by 42, we get 4 with a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 13424.0
Subtract 168 from 169 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
If we divide 10 by 42, we get 0 and a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 13424.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
42 can be fit into 100 2 times, resulting in a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 13424.02
Subtracting 84 from 100 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 9:
When dividing 160 by 42, we get 3 with a remainder of 34.
Put 3 as the next digit of the answer. 
Result so far: 13424.023
The remainder is 34 after subtracting 126 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 10:
42 can be fit into 340 8 times, resulting in a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 13424.0238
Deduct 336 from 340 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 11:
42 can be fit into 40 0 times, resulting in a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 13424.0238
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 12:
If we divide 400 by 42, we get 9 and a remainder of 22.
Use 9 as the next digit of our solution. 
Result so far: 13424.023809
The remainder is 22 after subtracting 378 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 13:
If we divide 220 by 42, we get 5 and a remainder of 10.
The next digit of our result is 5. 
Result so far: 13424.0238095
If we take 210 away from 220, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 14:
The number 42 fits into 100 2 times, leaving a remainder of 16.
Record the quotient 2 as the next digit in the result. 
Result so far: 13424.02380952
Deduct 84 from 100 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 13424.02380952, with a leftover of 1.6e-08.