Let's divide 543861 by 77
We want to figure out the number of times 543861 can be divided by 77.

Advancing to step 1:
77 can be fit into 5 0 times, resulting in a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 77

Moving on to step 2:
When dividing 54 by 77, we get 0 with a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Append the next digit (3) from the dividend to 54 and continue with: 543 / 77

Going ahead to step 3:
If we divide 543 by 77, we get 7 and a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtract 539 from 543 to get 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 77

Let's proceed to step 4:
If we divide 48 by 77, we get 0 and a remainder of 48.
The number 0 becomes the next digit in our result. 
Result so far: 70.0
Subtract 0 from 48 to get 48.
Grab the next digit (6) from the dividend, add it to 48, then carry on: 486 / 77

Going ahead to step 5:
The number 77 fits into 486 6 times, leaving a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 706.0
If we subtract 462 from 486, we get 24.
Fetch the next digit (1) from the dividend, attach it to 24 and continue: 241 / 77

Going ahead to step 6:
77 goes into 241 3 times with a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 7063.0
The remainder is 10 after subtracting 231 from 241.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 7:
When dividing 100 by 77, we get 1 with a remainder of 23.
The next digit of our result is 1. 
Result so far: 7063.1
If we subtract 77 from 100, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 8:
77 goes into 230 2 times with a remainder of 76.
Put 2 as the next digit of the answer. 
Result so far: 7063.12
If we take 154 away from 230, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 9:
760 divided by 77 is 9 with a remainder of 67.
The next digit of our result is 9. 
Result so far: 7063.129
Deduct 693 from 760 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 10:
77 can be fit into 670 8 times, resulting in a remainder of 54.
Put 8 as the next digit of the answer. 
Result so far: 7063.1298
Subtracting 616 from 670 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 11:
If we divide 540 by 77, we get 7 and a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 7063.12987
If we take 539 away from 540, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 12:
The number 77 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 7063.12987
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 13:
77 can be fit into 100 1 times, resulting in a remainder of 23.
The next digit of our result is 1. 
Result so far: 7063.1298701
Subtracting 77 from 100 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 14:
The number 77 fits into 230 2 times, leaving a remainder of 76.
The next digit of our result is 2. 
Result so far: 7063.12987012
If we take 154 away from 230, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The final outcome is 7063.12987012, with a leftover of 7.6e-08.