186906 ÷ 54 
The aim is to understand the frequency of 54 in 186906.

Step 1:
When dividing 1 by 54, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 54

Step 2:
54 can be fit into 18 0 times, resulting in a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 18 leaves us with 18.
Include the next digit (6) from the dividend after 18, then repeat: 186 / 54

Step 3:
54 goes into 186 3 times with a remainder of 24.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 24 after subtracting 162 from 186.
Fetch the next digit (9) from the dividend, attach it to 24 and continue: 249 / 54

Step 4:
When dividing 249 by 54, we get 4 with a remainder of 33.
The next digit of our result is 4. 
Result so far: 34.0
Deduct 216 from 249 and we're left with 33.
Grab the next digit (0) from the dividend, add it to 33, then carry on: 330 / 54

On to step 5:
When dividing 330 by 54, we get 6 with a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 346.0
Subtracting 324 from 330 leaves us with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 54

Advancing to step 6:
54 goes into 66 1 times with a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 3461.0
The remainder is 12 after subtracting 54 from 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 7:
54 can be fit into 120 2 times, resulting in a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 3461.2
If we take 108 away from 120, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 8:
When dividing 120 by 54, we get 2 with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 3461.22
If we subtract 108 from 120, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 3461.22 and a remainder of 0.012.