We look at the division of 66203019 by 543 
Our goal is to divide 66203019 by 543.

Advancing to step 1:
6 divided by 543 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 543

On to step 2:
543 can be fit into 66 0 times, resulting in a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Include the next digit (2) from the dividend after 66, then repeat: 662 / 543

Moving on to step 3:
662 divided by 543 is 1 with a remainder of 119.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 119 after subtracting 543 from 662.
Fetch the next digit (0) from the dividend, attach it to 119 and continue: 1190 / 543

Step 4:
1190 divided by 543 is 2 with a remainder of 104.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Subtracting 1086 from 1190 leaves us with 104.
Grab the next digit (3) from the dividend, add it to 104, then carry on: 1043 / 543

Advancing to step 5:
The number 543 fits into 1043 1 times, leaving a remainder of 500.
Put 1 as the next digit of the answer. 
Result so far: 121.0
The remainder is 500 after subtracting 543 from 1043.
Bring next digit (0) of the dividend behind the 500 and repeat the process: 5000 / 543

Step 6:
If we divide 5000 by 543, we get 9 and a remainder of 113.
Record the quotient 9 as the next digit in the result. 
Result so far: 1219.0
If we take 4887 away from 5000, we end up with 113.
Grab the next digit (1) from the dividend, add it to 113, then carry on: 1131 / 543

Step 7:
The number 543 fits into 1131 2 times, leaving a remainder of 45.
Record the quotient 2 as the next digit in the result. 
Result so far: 12192.0
Subtracting 1086 from 1131 leaves us with 45.
Take the next digit (9) from the dividend and append it to 45, then repeat: 459 / 543

Going ahead to step 8:
The number 543 fits into 459 0 times, leaving a remainder of 459.
The number 0 becomes the next digit in our result. 
Result so far: 121920.0
Subtract 0 from 459 to get 459.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4590, and continue the process.

Let's proceed to step 9:
When dividing 4590 by 543, we get 8 with a remainder of 246.
Record the quotient 8 as the next digit in the result. 
Result so far: 121920.8
The remainder is 246 after subtracting 4344 from 4590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Let's proceed to step 10:
543 can be fit into 2460 4 times, resulting in a remainder of 288.
The number 4 becomes the next digit in our result. 
Result so far: 121920.84
The remainder is 288 after subtracting 2172 from 2460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Let's proceed to step 11:
2880 divided by 543 is 5 with a remainder of 165.
Write down 5 as next digit of the result. 
Result so far: 121920.845
Deduct 2715 from 2880 and we're left with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Step 12:
543 goes into 1650 3 times with a remainder of 21.
The next digit of our result is 3. 
Result so far: 121920.8453
The remainder is 21 after subtracting 1629 from 1650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 13:
543 goes into 210 0 times with a remainder of 210.
Put 0 as the next digit of the answer. 
Result so far: 121920.8453
Deduct 0 from 210 and we're left with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Let's proceed to step 14:
When dividing 2100 by 543, we get 3 with a remainder of 471.
Record the quotient 3 as the next digit in the result. 
Result so far: 121920.845303
Deduct 1629 from 2100 and we're left with 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

Step 15:
543 can be fit into 4710 8 times, resulting in a remainder of 366.
The number 8 becomes the next digit in our result. 
Result so far: 121920.8453038
If we take 4344 away from 4710, we end up with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Advancing to step 16:
When dividing 3660 by 543, we get 6 with a remainder of 402.
The number 6 becomes the next digit in our result. 
Result so far: 121920.84530386
Subtract 3258 from 3660 to get 402.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

After the division, we end up with 121920.84530386 and a remainder of 4.02e-07.