We're dividing 72159873 by 231 
We're looking to find how many times 231 goes into 72159873.

On to step 1:
If we divide 7 by 231, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 231

Advancing to step 2:
When dividing 72 by 231, we get 0 with a remainder of 72.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Append the next digit (1) from the dividend to 72 and continue with: 721 / 231

Step 3:
When dividing 721 by 231, we get 3 with a remainder of 28.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 693 away from 721, we end up with 28.
Grab the next digit (5) from the dividend, add it to 28, then carry on: 285 / 231

Step 4:
If we divide 285 by 231, we get 1 and a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
If we subtract 231 from 285, we get 54.
Append the next digit (9) from the dividend to 54 and continue with: 549 / 231

Moving on to step 5:
231 goes into 549 2 times with a remainder of 87.
Write down 2 as next digit of the result. 
Result so far: 312.0
If we take 462 away from 549, we end up with 87.
Take the next digit (8) from the dividend and append it to 87, then repeat: 878 / 231

Let's proceed to step 6:
If we divide 878 by 231, we get 3 and a remainder of 185.
Use 3 as the next digit of our solution. 
Result so far: 3123.0
If we subtract 693 from 878, we get 185.
Bring next digit (7) of the dividend behind the 185 and repeat the process: 1857 / 231

Let's proceed to step 7:
When dividing 1857 by 231, we get 8 with a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 31238.0
If we subtract 1848 from 1857, we get 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 231

Moving on to step 8:
When dividing 93 by 231, we get 0 with a remainder of 93.
Write down 0 as next digit of the result. 
Result so far: 312380.0
Subtracting 0 from 93 leaves us with 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

On to step 9:
231 can be fit into 930 4 times, resulting in a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 312380.4
If we take 924 away from 930, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 10:
231 goes into 60 0 times with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 312380.4
If we take 0 away from 60, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 11:
The number 231 fits into 600 2 times, leaving a remainder of 138.
The next digit of our result is 2. 
Result so far: 312380.402
If we subtract 462 from 600, we get 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Advancing to step 12:
1380 divided by 231 is 5 with a remainder of 225.
Put 5 as the next digit of the answer. 
Result so far: 312380.4025
Deduct 1155 from 1380 and we're left with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Let's proceed to step 13:
If we divide 2250 by 231, we get 9 and a remainder of 171.
Write down 9 as next digit of the result. 
Result so far: 312380.40259
If we subtract 2079 from 2250, we get 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

On to step 14:
231 goes into 1710 7 times with a remainder of 93.
Write down 7 as next digit of the result. 
Result so far: 312380.402597
Subtracting 1617 from 1710 leaves us with 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Going ahead to step 15:
When dividing 930 by 231, we get 4 with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 312380.4025974
Subtracting 924 from 930 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 16:
The number 231 fits into 60 0 times, leaving a remainder of 60.
The next digit of our result is 0. 
Result so far: 312380.4025974
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final result is 312380.4025974 with a remainder of 6e-08.