679491 ÷ 54 
The aim is to understand the frequency of 54 in 679491.

Step 1:
If we divide 6 by 54, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 54

Going ahead to step 2:
54 can be fit into 67 1 times, resulting in a remainder of 13.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 54 from 67 leaves us with 13.
Append the next digit (9) from the dividend to 13 and continue with: 139 / 54

Let's proceed to step 3:
If we divide 139 by 54, we get 2 and a remainder of 31.
The next digit of our result is 2. 
Result so far: 12.0
The remainder is 31 after subtracting 108 from 139.
Grab the next digit (4) from the dividend, add it to 31, then carry on: 314 / 54

Going ahead to step 4:
54 can be fit into 314 5 times, resulting in a remainder of 44.
Use 5 as the next digit of our solution. 
Result so far: 125.0
Subtracting 270 from 314 leaves us with 44.
Grab the next digit (9) from the dividend, add it to 44, then carry on: 449 / 54

Going ahead to step 5:
When dividing 449 by 54, we get 8 with a remainder of 17.
Record the quotient 8 as the next digit in the result. 
Result so far: 1258.0
Subtract 432 from 449 to get 17.
Append the next digit (1) from the dividend to 17 and continue with: 171 / 54

Moving on to step 6:
When dividing 171 by 54, we get 3 with a remainder of 9.
Use 3 as the next digit of our solution. 
Result so far: 12583.0
If we subtract 162 from 171, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
When dividing 90 by 54, we get 1 with a remainder of 36.
Write down 1 as next digit of the result. 
Result so far: 12583.1
Deduct 54 from 90 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 8:
When dividing 360 by 54, we get 6 with a remainder of 36.
Record the quotient 6 as the next digit in the result. 
Result so far: 12583.16
If we take 324 away from 360, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 9:
If we divide 360 by 54, we get 6 and a remainder of 36.
Use 6 as the next digit of our solution. 
Result so far: 12583.166
The remainder is 36 after subtracting 324 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final result is 12583.166 with a remainder of 0.0036.