Let's divide 543612 by 86
We want to divide 543612 by 86.

Going ahead to step 1:
86 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 86

On to step 2:
If we divide 54 by 86, we get 0 and a remainder of 54.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Bring next digit (3) of the dividend behind the 54 and repeat the process: 543 / 86

Advancing to step 3:
When dividing 543 by 86, we get 6 with a remainder of 27.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Deduct 516 from 543 and we're left with 27.
Include the next digit (6) from the dividend after 27, then repeat: 276 / 86

Moving on to step 4:
86 goes into 276 3 times with a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 63.0
Subtracting 258 from 276 leaves us with 18.
Grab the next digit (1) from the dividend, add it to 18, then carry on: 181 / 86

Advancing to step 5:
86 goes into 181 2 times with a remainder of 9.
Write down 2 as next digit of the result. 
Result so far: 632.0
If we subtract 172 from 181, we get 9.
Bring next digit (2) of the dividend behind the 9 and repeat the process: 92 / 86

Moving on to step 6:
If we divide 92 by 86, we get 1 and a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 6321.0
Subtract 86 from 92 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 7:
The number 86 fits into 60 0 times, leaving a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 6321.0
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 8:
When dividing 600 by 86, we get 6 with a remainder of 84.
Put 6 as the next digit of the answer. 
Result so far: 6321.06
If we take 516 away from 600, we end up with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Moving on to step 9:
840 divided by 86 is 9 with a remainder of 66.
The number 9 becomes the next digit in our result. 
Result so far: 6321.069
If we subtract 774 from 840, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 10:
When dividing 660 by 86, we get 7 with a remainder of 58.
Record the quotient 7 as the next digit in the result. 
Result so far: 6321.0697
Subtract 602 from 660 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 11:
86 can be fit into 580 6 times, resulting in a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 6321.06976
Subtract 516 from 580 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 12:
If we divide 640 by 86, we get 7 and a remainder of 38.
The number 7 becomes the next digit in our result. 
Result so far: 6321.069767
Subtract 602 from 640 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 13:
If we divide 380 by 86, we get 4 and a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 6321.0697674
If we subtract 344 from 380, we get 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 14:
86 can be fit into 360 4 times, resulting in a remainder of 16.
The next digit of our result is 4. 
Result so far: 6321.06976744
If we subtract 344 from 360, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

After the division, we end up with 6321.06976744 and a remainder of 1.6e-08.