25193414 ÷ 18 
The aim is to understand the frequency of 18 in 25193414.

Step 1:
If we divide 2 by 18, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 18

On to step 2:
18 goes into 25 1 times with a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 18 from 25 to get 7.
Include the next digit (1) from the dividend after 7, then repeat: 71 / 18

Advancing to step 3:
71 divided by 18 is 3 with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we take 54 away from 71, we end up with 17.
Include the next digit (9) from the dividend after 17, then repeat: 179 / 18

Advancing to step 4:
18 goes into 179 9 times with a remainder of 17.
Put 9 as the next digit of the answer. 
Result so far: 139.0
The remainder is 17 after subtracting 162 from 179.
Bring next digit (3) of the dividend behind the 17 and repeat the process: 173 / 18

Going ahead to step 5:
18 goes into 173 9 times with a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 1399.0
Subtract 162 from 173 to get 11.
Grab the next digit (4) from the dividend, add it to 11, then carry on: 114 / 18

Moving on to step 6:
114 divided by 18 is 6 with a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 13996.0
The remainder is 6 after subtracting 108 from 114.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 18

Moving on to step 7:
When dividing 61 by 18, we get 3 with a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 139963.0
Deduct 54 from 61 and we're left with 7.
Fetch the next digit (4) from the dividend, attach it to 7 and continue: 74 / 18

Going ahead to step 8:
If we divide 74 by 18, we get 4 and a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 1399634.0
Subtracting 72 from 74 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 9:
The number 18 fits into 20 1 times, leaving a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1399634.1
If we subtract 18 from 20, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 10:
20 divided by 18 is 1 with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 1399634.11
Subtracting 18 from 20 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final result is 1399634.11 with a remainder of 0.002.