72911431 ÷ 805 
We want to figure out the number of times 72911431 can be divided by 805.

Advancing to step 1:
When dividing 7 by 805, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 805

Going ahead to step 2:
If we divide 72 by 805, we get 0 and a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Append the next digit (9) from the dividend to 72 and continue with: 729 / 805

Going ahead to step 3:
If we divide 729 by 805, we get 0 and a remainder of 729.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 729, we get 729.
Bring next digit (1) of the dividend behind the 729 and repeat the process: 7291 / 805

Moving on to step 4:
The number 805 fits into 7291 9 times, leaving a remainder of 46.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Deduct 7245 from 7291 and we're left with 46.
Take the next digit (1) from the dividend and append it to 46, then repeat: 461 / 805

Let's proceed to step 5:
805 can be fit into 461 0 times, resulting in a remainder of 461.
The next digit of our result is 0. 
Result so far: 90.0
Deduct 0 from 461 and we're left with 461.
Fetch the next digit (4) from the dividend, attach it to 461 and continue: 4614 / 805

Let's proceed to step 6:
4614 divided by 805 is 5 with a remainder of 589.
Record the quotient 5 as the next digit in the result. 
Result so far: 905.0
Deduct 4025 from 4614 and we're left with 589.
Bring next digit (3) of the dividend behind the 589 and repeat the process: 5893 / 805

Advancing to step 7:
If we divide 5893 by 805, we get 7 and a remainder of 258.
Write down 7 as next digit of the result. 
Result so far: 9057.0
If we take 5635 away from 5893, we end up with 258.
Append the next digit (1) from the dividend to 258 and continue with: 2581 / 805

Moving on to step 8:
If we divide 2581 by 805, we get 3 and a remainder of 166.
Write down 3 as next digit of the result. 
Result so far: 90573.0
Subtracting 2415 from 2581 leaves us with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Advancing to step 9:
If we divide 1660 by 805, we get 2 and a remainder of 50.
Use 2 as the next digit of our solution. 
Result so far: 90573.2
If we subtract 1610 from 1660, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 10:
The number 805 fits into 500 0 times, leaving a remainder of 500.
The number 0 becomes the next digit in our result. 
Result so far: 90573.2
The remainder is 500 after subtracting 0 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Moving on to step 11:
When dividing 5000 by 805, we get 6 with a remainder of 170.
Record the quotient 6 as the next digit in the result. 
Result so far: 90573.206
The remainder is 170 after subtracting 4830 from 5000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

On to step 12:
When dividing 1700 by 805, we get 2 with a remainder of 90.
Put 2 as the next digit of the answer. 
Result so far: 90573.2062
The remainder is 90 after subtracting 1610 from 1700.
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 13:
805 goes into 900 1 times with a remainder of 95.
The number 1 becomes the next digit in our result. 
Result so far: 90573.20621
Subtract 805 from 900 to get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Step 14:
950 divided by 805 is 1 with a remainder of 145.
Put 1 as the next digit of the answer. 
Result so far: 90573.206211
The remainder is 145 after subtracting 805 from 950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

The final result is 90573.206211 with a remainder of 1.45e-05.