We divide 421844 by 54
The aim is to understand the frequency of 54 in 421844.

Advancing to step 1:
When dividing 4 by 54, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 54

Going ahead to step 2:
The number 54 fits into 42 0 times, leaving a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Take the next digit (1) from the dividend and append it to 42, then repeat: 421 / 54

On to step 3:
54 can be fit into 421 7 times, resulting in a remainder of 43.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 378 from 421, we get 43.
Grab the next digit (8) from the dividend, add it to 43, then carry on: 438 / 54

Let's proceed to step 4:
If we divide 438 by 54, we get 8 and a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 78.0
The remainder is 6 after subtracting 432 from 438.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 54

On to step 5:
64 divided by 54 is 1 with a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 781.0
If we take 54 away from 64, we end up with 10.
Fetch the next digit (4) from the dividend, attach it to 10 and continue: 104 / 54

Going ahead to step 6:
54 goes into 104 1 times with a remainder of 50.
Put 1 as the next digit of the answer. 
Result so far: 7811.0
The remainder is 50 after subtracting 54 from 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 7:
When dividing 500 by 54, we get 9 with a remainder of 14.
The number 9 becomes the next digit in our result. 
Result so far: 7811.9
Subtract 486 from 500 to get 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:
If we divide 140 by 54, we get 2 and a remainder of 32.
Use 2 as the next digit of our solution. 
Result so far: 7811.92
Deduct 108 from 140 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 9:
When dividing 320 by 54, we get 5 with a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 7811.925
If we subtract 270 from 320, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 10:
500 divided by 54 is 9 with a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 7811.9259
If we take 486 away from 500, we end up 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.

Step 11:
If we divide 140 by 54, we get 2 and a remainder of 32.
Write down 2 as next digit of the result. 
Result so far: 7811.92592
Subtract 108 from 140 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 12:
54 can be fit into 320 5 times, resulting in a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 7811.925925
Deduct 270 from 320 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 13:
500 divided by 54 is 9 with a remainder of 14.
Use 9 as the next digit of our solution. 
Result so far: 7811.9259259
Deduct 486 from 500 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.

Moving on to step 14:
140 divided by 54 is 2 with a remainder of 32.
Put 2 as the next digit of the answer. 
Result so far: 7811.92592592
Subtracting 108 from 140 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Our division results in 7811.92592592 with a remaining 3.2e-08.