Let's divide 78999021 by 725
We want to divide 78999021 by 725.

Advancing to step 1:
If we divide 7 by 725, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 725

Let's proceed to step 2:
If we divide 78 by 725, we get 0 and a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Fetch the next digit (9) from the dividend, attach it to 78 and continue: 789 / 725

Moving on to step 3:
If we divide 789 by 725, we get 1 and a remainder of 64.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 725 from 789 to get 64.
Bring next digit (9) of the dividend behind the 64 and repeat the process: 649 / 725

Advancing to step 4:
725 goes into 649 0 times with a remainder of 649.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Deduct 0 from 649 and we're left with 649.
Grab the next digit (9) from the dividend, add it to 649, then carry on: 6499 / 725

Going ahead to step 5:
If we divide 6499 by 725, we get 8 and a remainder of 699.
The next digit of our result is 8. 
Result so far: 108.0
Subtract 5800 from 6499 to get 699.
Bring next digit (0) of the dividend behind the 699 and repeat the process: 6990 / 725

Advancing to step 6:
6990 divided by 725 is 9 with a remainder of 465.
The next digit of our result is 9. 
Result so far: 1089.0
Subtracting 6525 from 6990 leaves us with 465.
Take the next digit (2) from the dividend and append it to 465, then repeat: 4652 / 725

Moving on to step 7:
If we divide 4652 by 725, we get 6 and a remainder of 302.
Use 6 as the next digit of our solution. 
Result so far: 10896.0
If we subtract 4350 from 4652, we get 302.
Grab the next digit (1) from the dividend, add it to 302, then carry on: 3021 / 725

On to step 8:
3021 divided by 725 is 4 with a remainder of 121.
Use 4 as the next digit of our solution. 
Result so far: 108964.0
Deduct 2900 from 3021 and we're left with 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Let's proceed to step 9:
725 can be fit into 1210 1 times, resulting in a remainder of 485.
The next digit of our result is 1. 
Result so far: 108964.1
If we subtract 725 from 1210, we get 485.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

Advancing to step 10:
The number 725 fits into 4850 6 times, leaving a remainder of 500.
Put 6 as the next digit of the answer. 
Result so far: 108964.16
Deduct 4350 from 4850 and we're left with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Step 11:
If we divide 5000 by 725, we get 6 and a remainder of 650.
Use 6 as the next digit of our solution. 
Result so far: 108964.166
The remainder is 650 after subtracting 4350 from 5000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

The final outcome is 108964.166, with a leftover of 0.065.