We're dividing 426402 by 30 
The aim is to understand the frequency of 30 in 426402.

Going ahead to step 1:
The number 30 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 30

On to step 2:
When dividing 42 by 30, we get 1 with a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 30 from 42 to get 12.
Take the next digit (6) from the dividend and append it to 12, then repeat: 126 / 30

Step 3:
When dividing 126 by 30, we get 4 with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
Deduct 120 from 126 and we're left with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 30

Step 4:
30 goes into 64 2 times with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 142.0
Deduct 60 from 64 and we're left with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 30

Advancing to step 5:
The number 30 fits into 40 1 times, leaving a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 1421.0
The remainder is 10 after subtracting 30 from 40.
Include the next digit (2) from the dividend after 10, then repeat: 102 / 30

Let's proceed to step 6:
30 can be fit into 102 3 times, resulting in a remainder of 12.
Write down 3 as next digit of the result. 
Result so far: 14213.0
Deduct 90 from 102 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 7:
The number 30 fits into 120 4 times, leaving a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 14213.4
Subtracting 120 from 120 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
30 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 14213.4
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
30 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 14213.4
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 14213.4, and the remainder is 0.0.