72389108 ÷ 103 
We want to divide 72389108 by 103.

On to step 1:
The number 103 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 103

Let's proceed to step 2:
If we divide 72 by 103, we get 0 and 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.
Take the next digit (3) from the dividend and append it to 72, then repeat: 723 / 103

Moving on to step 3:
The number 103 fits into 723 7 times, leaving a remainder of 2.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we subtract 721 from 723, we get 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 103

On to step 4:
If we divide 28 by 103, we get 0 and a remainder of 28.
Use 0 as the next digit of our solution. 
Result so far: 70.0
The remainder is 28 after subtracting 0 from 28.
Grab the next digit (9) from the dividend, add it to 28, then carry on: 289 / 103

On to step 5:
When dividing 289 by 103, we get 2 with a remainder of 83.
Record the quotient 2 as the next digit in the result. 
Result so far: 702.0
Deduct 206 from 289 and we're left with 83.
Append the next digit (1) from the dividend to 83 and continue with: 831 / 103

Advancing to step 6:
831 divided by 103 is 8 with a remainder of 7.
Record the quotient 8 as the next digit in the result. 
Result so far: 7028.0
Subtract 824 from 831 to get 7.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 103

Going ahead to step 7:
103 can be fit into 70 0 times, resulting in a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 70280.0
If we subtract 0 from 70, we get 70.
Take the next digit (8) from the dividend and append it to 70, then repeat: 708 / 103

Advancing to step 8:
The number 103 fits into 708 6 times, leaving a remainder of 90.
The number 6 becomes the next digit in our result. 
Result so far: 702806.0
The remainder is 90 after subtracting 618 from 708.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 9:
If we divide 900 by 103, we get 8 and a remainder of 76.
Put 8 as the next digit of the answer. 
Result so far: 702806.8
Subtract 824 from 900 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 10:
103 goes into 760 7 times with a remainder of 39.
The next digit of our result is 7. 
Result so far: 702806.87
Deduct 721 from 760 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Going ahead to step 11:
390 divided by 103 is 3 with a remainder of 81.
Use 3 as the next digit of our solution. 
Result so far: 702806.873
If we subtract 309 from 390, we get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Step 12:
The number 103 fits into 810 7 times, leaving a remainder of 89.
Use 7 as the next digit of our solution. 
Result so far: 702806.8737
Subtract 721 from 810 to get 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

On to step 13:
890 divided by 103 is 8 with a remainder of 66.
Put 8 as the next digit of the answer. 
Result so far: 702806.87378
Subtracting 824 from 890 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 14:
660 divided by 103 is 6 with a remainder of 42.
The number 6 becomes the next digit in our result. 
Result so far: 702806.873786
Subtracting 618 from 660 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 15:
420 divided by 103 is 4 with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 702806.8737864
Subtracting 412 from 420 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 16:
103 goes into 80 0 times with a remainder of 80.
The next digit of our result is 0. 
Result so far: 702806.8737864
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final result is 702806.8737864 with a remainder of 8e-08.