Let's divide 72309 by 78
Let's see how many times 78 fits into 72309.

Advancing to step 1:
When dividing 7 by 78, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
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 / 78

On to step 2:
When dividing 72 by 78, we get 0 with a remainder of 72.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 72 to get 72.
Bring next digit (3) of the dividend behind the 72 and repeat the process: 723 / 78

Advancing to step 3:
78 goes into 723 9 times with a remainder of 21.
The next digit of our result is 9. 
Result so far: 9.0
If we take 702 away from 723, we end up with 21.
Append the next digit (0) from the dividend to 21 and continue with: 210 / 78

On to step 4:
When dividing 210 by 78, we get 2 with a remainder of 54.
The next digit of our result is 2. 
Result so far: 92.0
The remainder is 54 after subtracting 156 from 210.
Bring next digit (9) of the dividend behind the 54 and repeat the process: 549 / 78

On to step 5:
If we divide 549 by 78, we get 7 and a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 927.0
Subtracting 546 from 549 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 6:
If we divide 30 by 78, we get 0 and a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 927.0
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 7:
300 divided by 78 is 3 with a remainder of 66.
Use 3 as the next digit of our solution. 
Result so far: 927.03
Subtracting 234 from 300 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 8:
The number 78 fits into 660 8 times, leaving a remainder of 36.
The next digit of our result is 8. 
Result so far: 927.038
Deduct 624 from 660 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 9:
78 can be fit into 360 4 times, resulting in a remainder of 48.
Put 4 as the next digit of the answer. 
Result so far: 927.0384
Subtracting 312 from 360 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 10:
The number 78 fits into 480 6 times, leaving a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 927.03846
If we take 468 away from 480, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 11:
When dividing 120 by 78, we get 1 with a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 927.038461
Subtract 78 from 120 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 12:
If we divide 420 by 78, we get 5 and a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 927.0384615
If we take 390 away from 420, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 13:
The number 78 fits into 300 3 times, leaving a remainder of 66.
Record the quotient 3 as the next digit in the result. 
Result so far: 927.03846153
The remainder is 66 after subtracting 234 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

The quotient of the division is 927.03846153, and the remainder is 6.6e-08.