We're dividing 72390873 by 139 
Let's see how many times 139 fits into 72390873.

On to step 1:
The number 139 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 139

On to step 2:
72 divided by 139 is 0 with a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 72 after subtracting 0 from 72.
Append the next digit (3) from the dividend to 72 and continue with: 723 / 139

Going ahead to step 3:
When dividing 723 by 139, we get 5 with a remainder of 28.
The next digit of our result is 5. 
Result so far: 5.0
If we subtract 695 from 723, we get 28.
Take the next digit (9) from the dividend and append it to 28, then repeat: 289 / 139

Advancing to step 4:
The number 139 fits into 289 2 times, leaving a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 52.0
Deduct 278 from 289 and we're left with 11.
Take the next digit (0) from the dividend and append it to 11, then repeat: 110 / 139

Going ahead to step 5:
139 goes into 110 0 times with a remainder of 110.
The next digit of our result is 0. 
Result so far: 520.0
Subtract 0 from 110 to get 110.
Grab the next digit (8) from the dividend, add it to 110, then carry on: 1108 / 139

Let's proceed to step 6:
1108 divided by 139 is 7 with a remainder of 135.
Record the quotient 7 as the next digit in the result. 
Result so far: 5207.0
Subtract 973 from 1108 to get 135.
Fetch the next digit (7) from the dividend, attach it to 135 and continue: 1357 / 139

On to step 7:
139 can be fit into 1357 9 times, resulting in a remainder of 106.
The next digit of our result is 9. 
Result so far: 52079.0
Subtracting 1251 from 1357 leaves us with 106.
Bring next digit (3) of the dividend behind the 106 and repeat the process: 1063 / 139

Let's proceed to step 8:
139 goes into 1063 7 times with a remainder of 90.
Record the quotient 7 as the next digit in the result. 
Result so far: 520797.0
If we subtract 973 from 1063, we get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Going ahead to step 9:
The number 139 fits into 900 6 times, leaving a remainder of 66.
The next digit of our result is 6. 
Result so far: 520797.6
If we subtract 834 from 900, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 10:
660 divided by 139 is 4 with a remainder of 104.
Write down 4 as next digit of the result. 
Result so far: 520797.64
Subtract 556 from 660 to get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Moving on to step 11:
1040 divided by 139 is 7 with a remainder of 67.
Write down 7 as next digit of the result. 
Result so far: 520797.647
The remainder is 67 after subtracting 973 from 1040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 12:
139 can be fit into 670 4 times, resulting in a remainder of 114.
The next digit of our result is 4. 
Result so far: 520797.6474
Subtracting 556 from 670 leaves us with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Going ahead to step 13:
139 can be fit into 1140 8 times, resulting in a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 520797.64748
Subtracting 1112 from 1140 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 14:
280 divided by 139 is 2 with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 520797.647482
The remainder is 2 after subtracting 278 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 15:
139 can be fit into 20 0 times, resulting in a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 520797.647482
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 16:
When dividing 200 by 139, we get 1 with a remainder of 61.
Use 1 as the next digit of our solution. 
Result so far: 520797.64748201
If we take 139 away from 200, we end up with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

The final outcome is 520797.64748201, with a leftover of 6.1e-08.