We divide 409186 by 42
The aim is to understand the frequency of 42 in 409186.

Let's proceed to step 1:
42 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 42

Step 2:
If we divide 40 by 42, we get 0 and a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Take the next digit (9) from the dividend and append it to 40, then repeat: 409 / 42

On to step 3:
The number 42 fits into 409 9 times, leaving a remainder of 31.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtracting 378 from 409 leaves us with 31.
Bring next digit (1) of the dividend behind the 31 and repeat the process: 311 / 42

Going ahead to step 4:
311 divided by 42 is 7 with a remainder of 17.
The next digit of our result is 7. 
Result so far: 97.0
Subtract 294 from 311 to get 17.
Include the next digit (8) from the dividend after 17, then repeat: 178 / 42

Let's proceed to step 5:
42 can be fit into 178 4 times, resulting in a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 974.0
Subtracting 168 from 178 leaves us with 10.
Include the next digit (6) from the dividend after 10, then repeat: 106 / 42

Moving on to step 6:
42 can be fit into 106 2 times, resulting in a remainder of 22.
Record the quotient 2 as the next digit in the result. 
Result so far: 9742.0
If we take 84 away from 106, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 7:
220 divided by 42 is 5 with a remainder of 10.
The next digit of our result is 5. 
Result so far: 9742.5
Deduct 210 from 220 and we're left 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.

Step 8:
100 divided by 42 is 2 with a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 9742.52
If we subtract 84 from 100, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 9:
160 divided by 42 is 3 with a remainder of 34.
Put 3 as the next digit of the answer. 
Result so far: 9742.523
Deduct 126 from 160 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 10:
42 goes into 340 8 times with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 9742.5238
If we subtract 336 from 340, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 11:
42 goes into 40 0 times with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 9742.5238
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.

Moving on to step 12:
When dividing 400 by 42, we get 9 with a remainder of 22.
The number 9 becomes the next digit in our result. 
Result so far: 9742.523809
Deduct 378 from 400 and we're left with 22.
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:
42 goes into 220 5 times with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 9742.5238095
Subtracting 210 from 220 leaves us 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:
42 goes into 100 2 times with a remainder of 16.
The next digit of our result is 2. 
Result so far: 9742.52380952
Subtract 84 from 100 to get 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 result is 9742.52380952 with a remainder of 1.6e-08.