Let's divide 72073399 by 643
We want to divide 72073399 by 643.

On to step 1:
The number 643 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
Subtract 0 from 7 to get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 643

On to step 2:
If we divide 72 by 643, we get 0 and a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 72 after subtracting 0 from 72.
Bring next digit (0) of the dividend behind the 72 and repeat the process: 720 / 643

On to step 3:
When dividing 720 by 643, we get 1 with a remainder of 77.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 643 from 720, we get 77.
Take the next digit (7) from the dividend and append it to 77, then repeat: 777 / 643

Advancing to step 4:
643 can be fit into 777 1 times, resulting in a remainder of 134.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Deduct 643 from 777 and we're left with 134.
Include the next digit (3) from the dividend after 134, then repeat: 1343 / 643

Let's proceed to step 5:
643 goes into 1343 2 times with a remainder of 57.
The next digit of our result is 2. 
Result so far: 112.0
Deduct 1286 from 1343 and we're left with 57.
Include the next digit (3) from the dividend after 57, then repeat: 573 / 643

Let's proceed to step 6:
The number 643 fits into 573 0 times, leaving a remainder of 573.
The number 0 becomes the next digit in our result. 
Result so far: 1120.0
If we subtract 0 from 573, we get 573.
Fetch the next digit (9) from the dividend, attach it to 573 and continue: 5739 / 643

Advancing to step 7:
643 can be fit into 5739 8 times, resulting in a remainder of 595.
The next digit of our result is 8. 
Result so far: 11208.0
The remainder is 595 after subtracting 5144 from 5739.
Fetch the next digit (9) from the dividend, attach it to 595 and continue: 5959 / 643

Moving on to step 8:
When dividing 5959 by 643, we get 9 with a remainder of 172.
Put 9 as the next digit of the answer. 
Result so far: 112089.0
If we subtract 5787 from 5959, we get 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Moving on to step 9:
643 can be fit into 1720 2 times, resulting in a remainder of 434.
Use 2 as the next digit of our solution. 
Result so far: 112089.2
Subtracting 1286 from 1720 leaves us with 434.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4340, and continue the process.

Let's proceed to step 10:
The number 643 fits into 4340 6 times, leaving a remainder of 482.
The next digit of our result is 6. 
Result so far: 112089.26
The remainder is 482 after subtracting 3858 from 4340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4820, and continue the process.

Going ahead to step 11:
4820 divided by 643 is 7 with a remainder of 319.
Put 7 as the next digit of the answer. 
Result so far: 112089.267
Subtract 4501 from 4820 to get 319.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

Let's proceed to step 12:
3190 divided by 643 is 4 with a remainder of 618.
The next digit of our result is 4. 
Result so far: 112089.2674
Subtracting 2572 from 3190 leaves us with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Moving on to step 13:
When dividing 6180 by 643, we get 9 with a remainder of 393.
Use 9 as the next digit of our solution. 
Result so far: 112089.26749
Subtracting 5787 from 6180 leaves us with 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3930, and continue the process.

Advancing to step 14:
The number 643 fits into 3930 6 times, leaving a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 112089.267496
Subtract 3858 from 3930 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 15:
When dividing 720 by 643, we get 1 with a remainder of 77.
Record the quotient 1 as the next digit in the result. 
Result so far: 112089.2674961
Deduct 643 from 720 and we're left with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Let's proceed to step 16:
If we divide 770 by 643, we get 1 and a remainder of 127.
The number 1 becomes the next digit in our result. 
Result so far: 112089.26749611
The remainder is 127 after subtracting 643 from 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

After the division, we end up with 112089.26749611 and a remainder of 1.27e-07.