We're dividing 80488259 by 543 
Let's see how many times 543 fits into 80488259.

Moving on to step 1:
The number 543 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 543

Advancing to step 2:
80 divided by 543 is 0 with a remainder of 80.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 80 leaves us with 80.
Bring next digit (4) of the dividend behind the 80 and repeat the process: 804 / 543

On to step 3:
543 goes into 804 1 times with a remainder of 261.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 261 after subtracting 543 from 804.
Append the next digit (8) from the dividend to 261 and continue with: 2618 / 543

On to step 4:
When dividing 2618 by 543, we get 4 with a remainder of 446.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtracting 2172 from 2618 leaves us with 446.
Bring next digit (8) of the dividend behind the 446 and repeat the process: 4468 / 543

Moving on to step 5:
If we divide 4468 by 543, we get 8 and a remainder of 124.
Put 8 as the next digit of the answer. 
Result so far: 148.0
If we subtract 4344 from 4468, we get 124.
Grab the next digit (2) from the dividend, add it to 124, then carry on: 1242 / 543

Going ahead to step 6:
When dividing 1242 by 543, we get 2 with a remainder of 156.
Put 2 as the next digit of the answer. 
Result so far: 1482.0
Subtract 1086 from 1242 to get 156.
Grab the next digit (5) from the dividend, add it to 156, then carry on: 1565 / 543

Step 7:
1565 divided by 543 is 2 with a remainder of 479.
The next digit of our result is 2. 
Result so far: 14822.0
If we subtract 1086 from 1565, we get 479.
Bring next digit (9) of the dividend behind the 479 and repeat the process: 4799 / 543

Let's proceed to step 8:
543 can be fit into 4799 8 times, resulting in a remainder of 455.
Record the quotient 8 as the next digit in the result. 
Result so far: 148228.0
If we take 4344 away from 4799, we end up with 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Moving on to step 9:
4550 divided by 543 is 8 with a remainder of 206.
Put 8 as the next digit of the answer. 
Result so far: 148228.8
Deduct 4344 from 4550 and we're left with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Moving on to step 10:
If we divide 2060 by 543, we get 3 and a remainder of 431.
Write down 3 as next digit of the result. 
Result so far: 148228.83
Deduct 1629 from 2060 and we're left with 431.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4310, and continue the process.

Advancing to step 11:
If we divide 4310 by 543, we get 7 and a remainder of 509.
Put 7 as the next digit of the answer. 
Result so far: 148228.837
If we subtract 3801 from 4310, we get 509.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5090, and continue the process.

Going ahead to step 12:
If we divide 5090 by 543, we get 9 and a remainder of 203.
Put 9 as the next digit of the answer. 
Result so far: 148228.8379
If we subtract 4887 from 5090, we get 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

Going ahead to step 13:
If we divide 2030 by 543, we get 3 and a remainder of 401.
Use 3 as the next digit of our solution. 
Result so far: 148228.83793
If we subtract 1629 from 2030, we get 401.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4010, and continue the process.

Going ahead to step 14:
543 goes into 4010 7 times with a remainder of 209.
Put 7 as the next digit of the answer. 
Result so far: 148228.837937
Subtracting 3801 from 4010 leaves us with 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Step 15:
When dividing 2090 by 543, we get 3 with a remainder of 461.
The next digit of our result is 3. 
Result so far: 148228.8379373
If we take 1629 away from 2090, we end up with 461.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4610, and continue the process.

On to step 16:
The number 543 fits into 4610 8 times, leaving a remainder of 266.
The next digit of our result is 8. 
Result so far: 148228.83793738
Subtracting 4344 from 4610 leaves us with 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

The final result is 148228.83793738 with a remainder of 2.66e-07.