437057 ÷ 30 
The aim is to understand the frequency of 30 in 437057.

On to step 1:
30 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 30

Advancing to step 2:
30 goes into 43 1 times with a remainder of 13.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 30 from 43, we get 13.
Fetch the next digit (7) from the dividend, attach it to 13 and continue: 137 / 30

Advancing to step 3:
The number 30 fits into 137 4 times, leaving a remainder of 17.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we subtract 120 from 137, we get 17.
Append the next digit (0) from the dividend to 17 and continue with: 170 / 30

Going ahead to step 4:
170 divided by 30 is 5 with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 145.0
Subtracting 150 from 170 leaves us with 20.
Grab the next digit (5) from the dividend, add it to 20, then carry on: 205 / 30

Advancing to step 5:
When dividing 205 by 30, we get 6 with a remainder of 25.
Use 6 as the next digit of our solution. 
Result so far: 1456.0
The remainder is 25 after subtracting 180 from 205.
Append the next digit (7) from the dividend to 25 and continue with: 257 / 30

Let's proceed to step 6:
The number 30 fits into 257 8 times, leaving a remainder of 17.
Write down 8 as next digit of the result. 
Result so far: 14568.0
Subtracting 240 from 257 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 7:
The number 30 fits into 170 5 times, leaving a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 14568.5
The remainder is 20 after subtracting 150 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 8:
The number 30 fits into 200 6 times, leaving a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 14568.56
Subtract 180 from 200 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
If we divide 200 by 30, we get 6 and a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 14568.566
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 14568.566, with a leftover of 0.002.