350248 divided by 42 
The aim is to understand the frequency of 42 in 350248.

Let's proceed to step 1:
If we divide 3 by 42, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 42

On to step 2:
If we divide 35 by 42, we get 0 and a remainder of 35.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 35 to get 35.
Take the next digit (0) from the dividend and append it to 35, then repeat: 350 / 42

Moving on to step 3:
The number 42 fits into 350 8 times, leaving a remainder of 14.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 336 from 350 leaves us with 14.
Grab the next digit (2) from the dividend, add it to 14, then carry on: 142 / 42

Going ahead to step 4:
When dividing 142 by 42, we get 3 with a remainder of 16.
Record the quotient 3 as the next digit in the result. 
Result so far: 83.0
Subtracting 126 from 142 leaves us with 16.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 42

Advancing to step 5:
When dividing 164 by 42, we get 3 with a remainder of 38.
The next digit of our result is 3. 
Result so far: 833.0
The remainder is 38 after subtracting 126 from 164.
Append the next digit (8) from the dividend to 38 and continue with: 388 / 42

Step 6:
The number 42 fits into 388 9 times, leaving a remainder of 10.
Record the quotient 9 as the next digit in the result. 
Result so far: 8339.0
If we subtract 378 from 388, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 7:
42 can be fit into 100 2 times, resulting in a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 8339.2
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.

Let's proceed to step 8:
42 goes into 160 3 times with a remainder of 34.
Record the quotient 3 as the next digit in the result. 
Result so far: 8339.23
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.

Step 9:
When dividing 340 by 42, we get 8 with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 8339.238
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.

Moving on to step 10:
The number 42 fits into 40 0 times, leaving a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 8339.238
The remainder is 40 after subtracting 0 from 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 11:
When dividing 400 by 42, we get 9 with a remainder of 22.
The next digit of our result is 9. 
Result so far: 8339.23809
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.

Step 12:
If we divide 220 by 42, we get 5 and a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 8339.238095
The remainder is 10 after subtracting 210 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 13:
When dividing 100 by 42, we get 2 with a remainder of 16.
Record the quotient 2 as the next digit in the result. 
Result so far: 8339.2380952
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.

Let's proceed to step 14:
The number 42 fits into 160 3 times, leaving a remainder of 34.
Record the quotient 3 as the next digit in the result. 
Result so far: 8339.23809523
If we take 126 away from 160, we end up 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.

Our division results in 8339.23809523 with a remaining 3.4e-08.