73203114 ÷ 423 
Our goal is to divide 73203114 by 423.

Let's proceed to step 1:
When dividing 7 by 423, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (3) from the dividend, add it to 7, then carry on: 73 / 423

Step 2:
The number 423 fits into 73 0 times, leaving a remainder of 73.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 73 leaves us with 73.
Append the next digit (2) from the dividend to 73 and continue with: 732 / 423

Advancing to step 3:
The number 423 fits into 732 1 times, leaving a remainder of 309.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 309 after subtracting 423 from 732.
Include the next digit (0) from the dividend after 309, then repeat: 3090 / 423

On to step 4:
If we divide 3090 by 423, we get 7 and a remainder of 129.
Use 7 as the next digit of our solution. 
Result so far: 17.0
If we subtract 2961 from 3090, we get 129.
Include the next digit (3) from the dividend after 129, then repeat: 1293 / 423

Step 5:
423 goes into 1293 3 times with a remainder of 24.
Write down 3 as next digit of the result. 
Result so far: 173.0
Subtracting 1269 from 1293 leaves us with 24.
Bring next digit (1) of the dividend behind the 24 and repeat the process: 241 / 423

Moving on to step 6:
When dividing 241 by 423, we get 0 with a remainder of 241.
The next digit of our result is 0. 
Result so far: 1730.0
Subtracting 0 from 241 leaves us with 241.
Append the next digit (1) from the dividend to 241 and continue with: 2411 / 423

On to step 7:
2411 divided by 423 is 5 with a remainder of 296.
Put 5 as the next digit of the answer. 
Result so far: 17305.0
Subtract 2115 from 2411 to get 296.
Grab the next digit (4) from the dividend, add it to 296, then carry on: 2964 / 423

On to step 8:
The number 423 fits into 2964 7 times, leaving a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 173057.0
Subtract 2961 from 2964 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 9:
423 can be fit into 30 0 times, resulting in a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 173057.0
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 10:
When dividing 300 by 423, we get 0 with a remainder of 300.
Write down 0 as next digit of the result. 
Result so far: 173057.0
If we subtract 0 from 300, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

The final outcome is 173057.0, with a leftover of 0.3.