We divide 72378973 by 643
We want to divide 72378973 by 643.

Moving on to step 1:
643 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 643

Step 2:
When dividing 72 by 643, we get 0 with a remainder of 72.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 72, we end up with 72.
Append the next digit (3) from the dividend to 72 and continue with: 723 / 643

On to step 3:
643 can be fit into 723 1 times, resulting in a remainder of 80.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 643 from 723, we get 80.
Take the next digit (7) from the dividend and append it to 80, then repeat: 807 / 643

Step 4:
643 can be fit into 807 1 times, resulting in a remainder of 164.
Write down 1 as next digit of the result. 
Result so far: 11.0
If we subtract 643 from 807, we get 164.
Take the next digit (8) from the dividend and append it to 164, then repeat: 1648 / 643

Step 5:
The number 643 fits into 1648 2 times, leaving a remainder of 362.
Put 2 as the next digit of the answer. 
Result so far: 112.0
The remainder is 362 after subtracting 1286 from 1648.
Fetch the next digit (9) from the dividend, attach it to 362 and continue: 3629 / 643

Step 6:
3629 divided by 643 is 5 with a remainder of 414.
The next digit of our result is 5. 
Result so far: 1125.0
If we subtract 3215 from 3629, we get 414.
Append the next digit (7) from the dividend to 414 and continue with: 4147 / 643

On to step 7:
When dividing 4147 by 643, we get 6 with a remainder of 289.
The number 6 becomes the next digit in our result. 
Result so far: 11256.0
The remainder is 289 after subtracting 3858 from 4147.
Grab the next digit (3) from the dividend, add it to 289, then carry on: 2893 / 643

Moving on to step 8:
2893 divided by 643 is 4 with a remainder of 321.
Record the quotient 4 as the next digit in the result. 
Result so far: 112564.0
The remainder is 321 after subtracting 2572 from 2893.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Advancing to step 9:
When dividing 3210 by 643, we get 4 with a remainder of 638.
The number 4 becomes the next digit in our result. 
Result so far: 112564.4
If we subtract 2572 from 3210, we get 638.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6380, and continue the process.

Advancing to step 10:
643 goes into 6380 9 times with a remainder of 593.
Write down 9 as next digit of the result. 
Result so far: 112564.49
Deduct 5787 from 6380 and we're left with 593.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5930, and continue the process.

Step 11:
If we divide 5930 by 643, we get 9 and a remainder of 143.
The number 9 becomes the next digit in our result. 
Result so far: 112564.499
The remainder is 143 after subtracting 5787 from 5930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

In conclusion, the division gives 112564.499 with a balance of 0.0143.