Let's divide 543854 by 12
We want to figure out the number of times 543854 can be divided by 12.

Going ahead to step 1:
When dividing 5 by 12, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 12

Going ahead to step 2:
12 can be fit into 54 4 times, resulting in a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 48 away from 54, we end up with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 12

On to step 3:
When dividing 63 by 12, we get 5 with a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 45.0
If we take 60 away from 63, we end up with 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 12

Going ahead to step 4:
The number 12 fits into 38 3 times, leaving a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 453.0
The remainder is 2 after subtracting 36 from 38.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 12

Moving on to step 5:
25 divided by 12 is 2 with a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 4532.0
Subtracting 24 from 25 leaves us with 1.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 12

Step 6:
When dividing 14 by 12, we get 1 with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 45321.0
Subtract 12 from 14 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 7:
12 can be fit into 20 1 times, resulting in a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 45321.1
The remainder is 8 after subtracting 12 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 8:
80 divided by 12 is 6 with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 45321.16
If we take 72 away from 80, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
12 can be fit into 80 6 times, resulting in a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 45321.166
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 45321.166 and a remainder of 0.0008.