721804 ÷ 78 
We want to figure out the number of times 721804 can be divided by 78.

Moving on to step 1:
If we divide 7 by 78, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 78

Moving on to step 2:
78 goes into 72 0 times with a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 72 to get 72.
Grab the next digit (1) from the dividend, add it to 72, then carry on: 721 / 78

Going ahead to step 3:
If we divide 721 by 78, we get 9 and a remainder of 19.
The next digit of our result is 9. 
Result so far: 9.0
The remainder is 19 after subtracting 702 from 721.
Bring next digit (8) of the dividend behind the 19 and repeat the process: 198 / 78

Advancing to step 4:
198 divided by 78 is 2 with a remainder of 42.
The number 2 becomes the next digit in our result. 
Result so far: 92.0
If we take 156 away from 198, we end up with 42.
Include the next digit (0) from the dividend after 42, then repeat: 420 / 78

Step 5:
420 divided by 78 is 5 with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 925.0
Deduct 390 from 420 and we're left with 30.
Append the next digit (4) from the dividend to 30 and continue with: 304 / 78

On to step 6:
The number 78 fits into 304 3 times, leaving a remainder of 70.
The number 3 becomes the next digit in our result. 
Result so far: 9253.0
Deduct 234 from 304 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 7:
78 goes into 700 8 times with a remainder of 76.
Write down 8 as next digit of the result. 
Result so far: 9253.8
The remainder is 76 after subtracting 624 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 8:
When dividing 760 by 78, we get 9 with a remainder of 58.
The next digit of our result is 9. 
Result so far: 9253.89
The remainder is 58 after subtracting 702 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 9:
If we divide 580 by 78, we get 7 and a remainder of 34.
The number 7 becomes the next digit in our result. 
Result so far: 9253.897
Subtract 546 from 580 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 10:
If we divide 340 by 78, we get 4 and a remainder of 28.
Use 4 as the next digit of our solution. 
Result so far: 9253.8974
If we take 312 away from 340, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 11:
78 goes into 280 3 times with a remainder of 46.
The next digit of our result is 3. 
Result so far: 9253.89743
If we subtract 234 from 280, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 12:
The number 78 fits into 460 5 times, leaving a remainder of 70.
Write down 5 as next digit of the result. 
Result so far: 9253.897435
If we subtract 390 from 460, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 13:
700 divided by 78 is 8 with a remainder of 76.
Put 8 as the next digit of the answer. 
Result so far: 9253.8974358
Deduct 624 from 700 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 14:
78 can be fit into 760 9 times, resulting in a remainder of 58.
The number 9 becomes the next digit in our result. 
Result so far: 9253.89743589
Subtracting 702 from 760 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The final result is 9253.89743589 with a remainder of 5.8e-08.