625438 divided by 30 
The aim is to understand the frequency of 30 in 625438.

Let's proceed to step 1:
30 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 30

Let's proceed to step 2:
30 can be fit into 62 2 times, resulting in a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 2 after subtracting 60 from 62.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 30

Step 3:
If we divide 25 by 30, we get 0 and a remainder of 25.
The next digit of our result is 0. 
Result so far: 20.0
If we subtract 0 from 25, we get 25.
Include the next digit (4) from the dividend after 25, then repeat: 254 / 30

Let's proceed to step 4:
254 divided by 30 is 8 with a remainder of 14.
Record the quotient 8 as the next digit in the result. 
Result so far: 208.0
If we subtract 240 from 254, we get 14.
Take the next digit (3) from the dividend and append it to 14, then repeat: 143 / 30

Moving on to step 5:
30 can be fit into 143 4 times, resulting in a remainder of 23.
The next digit of our result is 4. 
Result so far: 2084.0
The remainder is 23 after subtracting 120 from 143.
Take the next digit (8) from the dividend and append it to 23, then repeat: 238 / 30

Moving on to step 6:
30 goes into 238 7 times with a remainder of 28.
Put 7 as the next digit of the answer. 
Result so far: 20847.0
The remainder is 28 after subtracting 210 from 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 7:
30 goes into 280 9 times with a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 20847.9
If we take 270 away from 280, 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.

On to step 8:
30 goes into 100 3 times with a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 20847.93
Deduct 90 from 100 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.

Advancing to step 9:
30 goes into 100 3 times with a remainder of 10.
Use 3 as the next digit of our solution. 
Result so far: 20847.933
Subtract 90 from 100 to 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.

Our division results in 20847.933 with a remaining 0.001.