983451 divided by 54 
The aim is to understand the frequency of 54 in 983451.

On to step 1:
When dividing 9 by 54, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 54

Moving on to step 2:
The number 54 fits into 98 1 times, leaving a remainder of 44.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 44 after subtracting 54 from 98.
Bring next digit (3) of the dividend behind the 44 and repeat the process: 443 / 54

Advancing to step 3:
When dividing 443 by 54, we get 8 with a remainder of 11.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Subtract 432 from 443 to get 11.
Take the next digit (4) from the dividend and append it to 11, then repeat: 114 / 54

Let's proceed to step 4:
The number 54 fits into 114 2 times, leaving a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 182.0
Deduct 108 from 114 and we're left with 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 54

Going ahead to step 5:
If we divide 65 by 54, we get 1 and a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 1821.0
If we subtract 54 from 65, we get 11.
Fetch the next digit (1) from the dividend, attach it to 11 and continue: 111 / 54

On to step 6:
54 goes into 111 2 times with a remainder of 3.
The next digit of our result is 2. 
Result so far: 18212.0
If we subtract 108 from 111, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
The number 54 fits into 30 0 times, leaving a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 18212.0
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 8:
The number 54 fits into 300 5 times, leaving a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 18212.05
The remainder is 30 after subtracting 270 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 9:
The number 54 fits into 300 5 times, leaving a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 18212.055
Deduct 270 from 300 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The final outcome is 18212.055, with a leftover of 0.003.