We're dividing 278573 by 18 
The aim is to understand the frequency of 18 in 278573.

Going ahead to step 1:
18 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (7) from the dividend and append it to 2, then repeat: 27 / 18

Let's proceed to step 2:
27 divided by 18 is 1 with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 18 from 27, we get 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 18

Let's proceed to step 3:
18 goes into 98 5 times with a remainder of 8.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
Subtracting 90 from 98 leaves us with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 18

Step 4:
18 can be fit into 85 4 times, resulting in a remainder of 13.
Write down 4 as next digit of the result. 
Result so far: 154.0
If we take 72 away from 85, we end up with 13.
Include the next digit (7) from the dividend after 13, then repeat: 137 / 18

Moving on to step 5:
If we divide 137 by 18, we get 7 and a remainder of 11.
The next digit of our result is 7. 
Result so far: 1547.0
Deduct 126 from 137 and we're left with 11.
Append the next digit (3) from the dividend to 11 and continue with: 113 / 18

Moving on to step 6:
The number 18 fits into 113 6 times, leaving a remainder of 5.
Use 6 as the next digit of our solution. 
Result so far: 15476.0
Deduct 108 from 113 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
18 can be fit into 50 2 times, resulting in a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 15476.2
Subtracting 36 from 50 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 8:
140 divided by 18 is 7 with a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 15476.27
Deduct 126 from 140 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 9:
18 goes into 140 7 times with a remainder of 14.
Write down 7 as next digit of the result. 
Result so far: 15476.277
Subtracting 126 from 140 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

In conclusion, the division gives 15476.277 with a balance of 0.0014.