576590 divided by 42 
The aim is to understand the frequency of 42 in 576590.

Step 1:
42 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 42

Step 2:
When dividing 57 by 42, we get 1 with a remainder of 15.
The next digit of our result is 1. 
Result so far: 1.0
If we take 42 away from 57, we end up with 15.
Fetch the next digit (6) from the dividend, attach it to 15 and continue: 156 / 42

Going ahead to step 3:
42 can be fit into 156 3 times, resulting in a remainder of 30.
Put 3 as the next digit of the answer. 
Result so far: 13.0
The remainder is 30 after subtracting 126 from 156.
Bring next digit (5) of the dividend behind the 30 and repeat the process: 305 / 42

Moving on to step 4:
42 can be fit into 305 7 times, resulting in a remainder of 11.
Use 7 as the next digit of our solution. 
Result so far: 137.0
Deduct 294 from 305 and we're left with 11.
Take the next digit (9) from the dividend and append it to 11, then repeat: 119 / 42

On to step 5:
The number 42 fits into 119 2 times, leaving a remainder of 35.
The number 2 becomes the next digit in our result. 
Result so far: 1372.0
Deduct 84 from 119 and we're left with 35.
Include the next digit (0) from the dividend after 35, then repeat: 350 / 42

Moving on to step 6:
42 goes into 350 8 times with a remainder of 14.
Write down 8 as next digit of the result. 
Result so far: 13728.0
Deduct 336 from 350 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 7:
42 can be fit into 140 3 times, resulting in a remainder of 14.
The number 3 becomes the next digit in our result. 
Result so far: 13728.3
If we subtract 126 from 140, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 8:
140 divided by 42 is 3 with a remainder of 14.
Record the quotient 3 as the next digit in the result. 
Result so far: 13728.33
Subtract 126 from 140 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final result is 13728.33 with a remainder of 0.014.