18132500 ÷ 389 
The aim is to understand the frequency of 389 in 18132500.

Moving on to step 1:
389 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 389

Going ahead to step 2:
If we divide 18 by 389, we get 0 and a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 18 leaves us with 18.
Fetch the next digit (1) from the dividend, attach it to 18 and continue: 181 / 389

Advancing to step 3:
When dividing 181 by 389, we get 0 with a remainder of 181.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 181 after subtracting 0 from 181.
Include the next digit (3) from the dividend after 181, then repeat: 1813 / 389

Advancing to step 4:
The number 389 fits into 1813 4 times, leaving a remainder of 257.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 1556 from 1813, we get 257.
Grab the next digit (2) from the dividend, add it to 257, then carry on: 2572 / 389

Advancing to step 5:
The number 389 fits into 2572 6 times, leaving a remainder of 238.
The number 6 becomes the next digit in our result. 
Result so far: 46.0
Deduct 2334 from 2572 and we're left with 238.
Include the next digit (5) from the dividend after 238, then repeat: 2385 / 389

Let's proceed to step 6:
If we divide 2385 by 389, we get 6 and a remainder of 51.
Record the quotient 6 as the next digit in the result. 
Result so far: 466.0
Subtract 2334 from 2385 to get 51.
Append the next digit (0) from the dividend to 51 and continue with: 510 / 389

On to step 7:
If we divide 510 by 389, we get 1 and a remainder of 121.
Record the quotient 1 as the next digit in the result. 
Result so far: 4661.0
Subtract 389 from 510 to get 121.
Append the next digit (0) from the dividend to 121 and continue with: 1210 / 389

Moving on to step 8:
If we divide 1210 by 389, we get 3 and a remainder of 43.
Write down 3 as next digit of the result. 
Result so far: 46613.0
The remainder is 43 after subtracting 1167 from 1210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 9:
389 goes into 430 1 times with a remainder of 41.
Record the quotient 1 as the next digit in the result. 
Result so far: 46613.1
Subtract 389 from 430 to get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Step 10:
410 divided by 389 is 1 with a remainder of 21.
Use 1 as the next digit of our solution. 
Result so far: 46613.11
If we subtract 389 from 410, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

After the division, we end up with 46613.11 and a remainder of 0.021.