Let's divide 402921 by 54
The aim is to understand the frequency of 54 in 402921.

On to step 1:
54 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 54

Moving on to step 2:
54 goes into 40 0 times with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 40 leaves us with 40.
Append the next digit (2) from the dividend to 40 and continue with: 402 / 54

On to step 3:
54 can be fit into 402 7 times, resulting in a remainder of 24.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtract 378 from 402 to get 24.
Take the next digit (9) from the dividend and append it to 24, then repeat: 249 / 54

Going ahead to step 4:
If we divide 249 by 54, we get 4 and a remainder of 33.
The number 4 becomes the next digit in our result. 
Result so far: 74.0
If we subtract 216 from 249, we get 33.
Append the next digit (2) from the dividend to 33 and continue with: 332 / 54

Advancing to step 5:
The number 54 fits into 332 6 times, leaving a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 746.0
Deduct 324 from 332 and we're left with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 54

On to step 6:
If we divide 81 by 54, we get 1 and a remainder of 27.
The next digit of our result is 1. 
Result so far: 7461.0
The remainder is 27 after subtracting 54 from 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 7:
When dividing 270 by 54, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 7461.5
Subtract 270 from 270 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
If we divide 0 by 54, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 7461.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
If we divide 0 by 54, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 7461.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 7461.5 and a remainder of 0.0.