We look at the division of 72971794 by 509 
Our goal is to divide 72971794 by 509.

On to step 1:
509 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 509

Step 2:
509 can be fit into 72 0 times, resulting in a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Bring next digit (9) of the dividend behind the 72 and repeat the process: 729 / 509

Moving on to step 3:
729 divided by 509 is 1 with a remainder of 220.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 509 from 729 and we're left with 220.
Bring next digit (7) of the dividend behind the 220 and repeat the process: 2207 / 509

Moving on to step 4:
509 goes into 2207 4 times with a remainder of 171.
The next digit of our result is 4. 
Result so far: 14.0
Subtract 2036 from 2207 to get 171.
Append the next digit (1) from the dividend to 171 and continue with: 1711 / 509

On to step 5:
The number 509 fits into 1711 3 times, leaving a remainder of 184.
Put 3 as the next digit of the answer. 
Result so far: 143.0
The remainder is 184 after subtracting 1527 from 1711.
Bring next digit (7) of the dividend behind the 184 and repeat the process: 1847 / 509

Moving on to step 6:
When dividing 1847 by 509, we get 3 with a remainder of 320.
The next digit of our result is 3. 
Result so far: 1433.0
The remainder is 320 after subtracting 1527 from 1847.
Include the next digit (9) from the dividend after 320, then repeat: 3209 / 509

Advancing to step 7:
If we divide 3209 by 509, we get 6 and a remainder of 155.
The number 6 becomes the next digit in our result. 
Result so far: 14336.0
If we take 3054 away from 3209, we end up with 155.
Include the next digit (4) from the dividend after 155, then repeat: 1554 / 509

On to step 8:
509 can be fit into 1554 3 times, resulting in a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 143363.0
Deduct 1527 from 1554 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 9:
509 goes into 270 0 times with a remainder of 270.
Put 0 as the next digit of the answer. 
Result so far: 143363.0
Subtracting 0 from 270 leaves us with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Let's proceed to step 10:
509 goes into 2700 5 times with a remainder of 155.
Record the quotient 5 as the next digit in the result. 
Result so far: 143363.05
Subtract 2545 from 2700 to get 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Moving on to step 11:
The number 509 fits into 1550 3 times, leaving a remainder of 23.
Write down 3 as next digit of the result. 
Result so far: 143363.053
Subtract 1527 from 1550 to 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.

Let's proceed to step 12:
509 can be fit into 230 0 times, resulting in a remainder of 230.
Write down 0 as next digit of the result. 
Result so far: 143363.053
The remainder is 230 after subtracting 0 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Let's proceed to step 13:
If we divide 2300 by 509, we get 4 and a remainder of 264.
Use 4 as the next digit of our solution. 
Result so far: 143363.05304
If we subtract 2036 from 2300, we get 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Going ahead to step 14:
509 can be fit into 2640 5 times, resulting in a remainder of 95.
Record the quotient 5 as the next digit in the result. 
Result so far: 143363.053045
Subtract 2545 from 2640 to get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Let's proceed to step 15:
509 goes into 950 1 times with a remainder of 441.
Write down 1 as next digit of the result. 
Result so far: 143363.0530451
Subtracting 509 from 950 leaves us with 441.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4410, and continue the process.

Advancing to step 16:
The number 509 fits into 4410 8 times, leaving a remainder of 338.
Put 8 as the next digit of the answer. 
Result so far: 143363.05304518
Subtract 4072 from 4410 to get 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

The final outcome is 143363.05304518, with a leftover of 3.38e-07.