Let's divide 345840 by 54
We want to figure out the number of times 345840 can be divided by 54.

Let's proceed to step 1:
54 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 54

Advancing to step 2:
The number 54 fits into 34 0 times, leaving a remainder of 34.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 34 and we're left with 34.
Fetch the next digit (5) from the dividend, attach it to 34 and continue: 345 / 54

Let's proceed to step 3:
The number 54 fits into 345 6 times, leaving a remainder of 21.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Deduct 324 from 345 and we're left with 21.
Take the next digit (8) from the dividend and append it to 21, then repeat: 218 / 54

Advancing to step 4:
When dividing 218 by 54, we get 4 with a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 64.0
The remainder is 2 after subtracting 216 from 218.
Include the next digit (4) from the dividend after 2, then repeat: 24 / 54

Step 5:
When dividing 24 by 54, we get 0 with a remainder of 24.
Record the quotient 0 as the next digit in the result. 
Result so far: 640.0
If we subtract 0 from 24, we get 24.
Fetch the next digit (0) from the dividend, attach it to 24 and continue: 240 / 54

Moving on to step 6:
If we divide 240 by 54, we get 4 and a remainder of 24.
The next digit of our result is 4. 
Result so far: 6404.0
Subtract 216 from 240 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 7:
The number 54 fits into 240 4 times, leaving a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 6404.4
Subtracting 216 from 240 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 8:
54 can be fit into 240 4 times, resulting in a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 6404.44
Subtracting 216 from 240 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final result is 6404.44 with a remainder of 0.024.