339510 ÷ 72 
Our goal is to divide 339510 by 72.

Step 1:
3 divided by 72 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 72

On to step 2:
33 divided by 72 is 0 with a remainder of 33.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 33 after subtracting 0 from 33.
Include the next digit (9) from the dividend after 33, then repeat: 339 / 72

On to step 3:
339 divided by 72 is 4 with a remainder of 51.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 288 from 339 to get 51.
Grab the next digit (5) from the dividend, add it to 51, then carry on: 515 / 72

Advancing to step 4:
515 divided by 72 is 7 with a remainder of 11.
Use 7 as the next digit of our solution. 
Result so far: 47.0
If we take 504 away from 515, we end up with 11.
Append the next digit (1) from the dividend to 11 and continue with: 111 / 72

Moving on to step 5:
The number 72 fits into 111 1 times, leaving a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 471.0
The remainder is 39 after subtracting 72 from 111.
Grab the next digit (0) from the dividend, add it to 39, then carry on: 390 / 72

Moving on to step 6:
72 can be fit into 390 5 times, resulting in a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 4715.0
If we subtract 360 from 390, we get 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 7:
If we divide 300 by 72, we get 4 and a remainder of 12.
Put 4 as the next digit of the answer. 
Result so far: 4715.4
Subtract 288 from 300 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 8:
If we divide 120 by 72, we get 1 and a remainder of 48.
Use 1 as the next digit of our solution. 
Result so far: 4715.41
If we subtract 72 from 120, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 9:
72 can be fit into 480 6 times, resulting in a remainder of 48.
Record the quotient 6 as the next digit in the result. 
Result so far: 4715.416
If we take 432 away from 480, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 10:
If we divide 480 by 72, we get 6 and a remainder of 48.
The next digit of our result is 6. 
Result so far: 4715.4166
If we subtract 432 from 480, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final outcome is 4715.4166, with a leftover of 0.00048.