138591 ÷ 72 
We want to divide 138591 by 72.

Let's proceed to step 1:
The number 72 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 72

On to step 2:
If we divide 13 by 72, we get 0 and a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Fetch the next digit (8) from the dividend, attach it to 13 and continue: 138 / 72

Let's proceed to step 3:
When dividing 138 by 72, we get 1 with a remainder of 66.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 72 from 138, we get 66.
Fetch the next digit (5) from the dividend, attach it to 66 and continue: 665 / 72

Moving on to step 4:
If we divide 665 by 72, we get 9 and a remainder of 17.
Write down 9 as next digit of the result. 
Result so far: 19.0
If we take 648 away from 665, we end up with 17.
Fetch the next digit (9) from the dividend, attach it to 17 and continue: 179 / 72

Step 5:
72 can be fit into 179 2 times, resulting in a remainder of 35.
The next digit of our result is 2. 
Result so far: 192.0
Deduct 144 from 179 and we're left with 35.
Include the next digit (1) from the dividend after 35, then repeat: 351 / 72

Advancing to step 6:
The number 72 fits into 351 4 times, leaving a remainder of 63.
The next digit of our result is 4. 
Result so far: 1924.0
If we subtract 288 from 351, we get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Let's proceed to step 7:
72 can be fit into 630 8 times, resulting in a remainder of 54.
The next digit of our result is 8. 
Result so far: 1924.8
Subtracting 576 from 630 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 8:
540 divided by 72 is 7 with a remainder of 36.
Record the quotient 7 as the next digit in the result. 
Result so far: 1924.87
Subtracting 504 from 540 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 9:
If we divide 360 by 72, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 1924.875
Subtract 360 from 360 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
72 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1924.875
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 11:
72 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1924.875
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 1924.875, and the remainder is 0.0.