We're dividing 303190 by 42 
The aim is to understand the frequency of 42 in 303190.

Moving on to step 1:
42 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 42

Step 2:
If we divide 30 by 42, we get 0 and a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 30 leaves us with 30.
Bring next digit (3) of the dividend behind the 30 and repeat the process: 303 / 42

Moving on to step 3:
The number 42 fits into 303 7 times, leaving a remainder of 9.
The next digit of our result is 7. 
Result so far: 7.0
Subtracting 294 from 303 leaves us with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 42

Advancing to step 4:
42 can be fit into 91 2 times, resulting in a remainder of 7.
The number 2 becomes the next digit in our result. 
Result so far: 72.0
Subtract 84 from 91 to get 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 42

On to step 5:
The number 42 fits into 79 1 times, leaving a remainder of 37.
Put 1 as the next digit of the answer. 
Result so far: 721.0
The remainder is 37 after subtracting 42 from 79.
Grab the next digit (0) from the dividend, add it to 37, then carry on: 370 / 42

Going ahead to step 6:
370 divided by 42 is 8 with a remainder of 34.
Put 8 as the next digit of the answer. 
Result so far: 7218.0
If we subtract 336 from 370, we get 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 7:
340 divided by 42 is 8 with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 7218.8
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.

On to step 8:
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: 7218.8
Subtract 0 from 40 to get 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 9:
400 divided by 42 is 9 with a remainder of 22.
Write down 9 as next digit of the result. 
Result so far: 7218.809
If we subtract 378 from 400, we get 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 10:
If we divide 220 by 42, we get 5 and a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 7218.8095
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.

Let's proceed to step 11:
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: 7218.80952
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.

On to step 12:
When dividing 160 by 42, we get 3 with a remainder of 34.
Record the quotient 3 as the next digit in the result. 
Result so far: 7218.809523
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 13:
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: 7218.8095238
If we take 336 away from 340, we end up 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.

Step 14:
40 divided by 42 is 0 with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 7218.8095238
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.

Our division results in 7218.8095238 with a remaining 4e-08.