We're dividing 73989105 by 543 
We're looking to find how many times 543 goes into 73989105.

Going ahead to step 1:
543 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 543

Let's proceed to step 2:
543 can be fit into 73 0 times, resulting in a remainder of 73.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 73 after subtracting 0 from 73.
Bring next digit (9) of the dividend behind the 73 and repeat the process: 739 / 543

Going ahead to step 3:
739 divided by 543 is 1 with a remainder of 196.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 543 from 739, we get 196.
Bring next digit (8) of the dividend behind the 196 and repeat the process: 1968 / 543

Advancing to step 4:
1968 divided by 543 is 3 with a remainder of 339.
Write down 3 as next digit of the result. 
Result so far: 13.0
Deduct 1629 from 1968 and we're left with 339.
Include the next digit (9) from the dividend after 339, then repeat: 3399 / 543

Let's proceed to step 5:
When dividing 3399 by 543, we get 6 with a remainder of 141.
Put 6 as the next digit of the answer. 
Result so far: 136.0
Deduct 3258 from 3399 and we're left with 141.
Grab the next digit (1) from the dividend, add it to 141, then carry on: 1411 / 543

On to step 6:
543 goes into 1411 2 times with a remainder of 325.
The next digit of our result is 2. 
Result so far: 1362.0
If we take 1086 away from 1411, we end up with 325.
Append the next digit (0) from the dividend to 325 and continue with: 3250 / 543

On to step 7:
543 goes into 3250 5 times with a remainder of 535.
Write down 5 as next digit of the result. 
Result so far: 13625.0
Deduct 2715 from 3250 and we're left with 535.
Take the next digit (5) from the dividend and append it to 535, then repeat: 5355 / 543

On to step 8:
When dividing 5355 by 543, we get 9 with a remainder of 468.
Use 9 as the next digit of our solution. 
Result so far: 136259.0
Subtract 4887 from 5355 to get 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

On to step 9:
If we divide 4680 by 543, we get 8 and a remainder of 336.
Use 8 as the next digit of our solution. 
Result so far: 136259.8
Deduct 4344 from 4680 and we're left with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Step 10:
The number 543 fits into 3360 6 times, leaving a remainder of 102.
Use 6 as the next digit of our solution. 
Result so far: 136259.86
If we subtract 3258 from 3360, we get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

On to step 11:
If we divide 1020 by 543, we get 1 and a remainder of 477.
Record the quotient 1 as the next digit in the result. 
Result so far: 136259.861
Subtract 543 from 1020 to get 477.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4770, and continue the process.

Step 12:
543 goes into 4770 8 times with a remainder of 426.
Put 8 as the next digit of the answer. 
Result so far: 136259.8618
Subtract 4344 from 4770 to get 426.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4260, and continue the process.

Step 13:
543 can be fit into 4260 7 times, resulting in a remainder of 459.
Use 7 as the next digit of our solution. 
Result so far: 136259.86187
If we subtract 3801 from 4260, we 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.

Advancing to step 14:
543 goes into 4590 8 times with a remainder of 246.
Record the quotient 8 as the next digit in the result. 
Result so far: 136259.861878
Subtracting 4344 from 4590 leaves us with 246.
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 15:
2460 divided by 543 is 4 with a remainder of 288.
Write down 4 as next digit of the result. 
Result so far: 136259.8618784
Subtracting 2172 from 2460 leaves us with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Moving on to step 16:
543 can be fit into 2880 5 times, resulting in a remainder of 165.
Use 5 as the next digit of our solution. 
Result so far: 136259.86187845
Subtracting 2715 from 2880 leaves us 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.

The final result is 136259.86187845 with a remainder of 1.65e-07.