We divide 78192342 by 15
Let's see how many times 15 fits into 78192342.

Advancing to step 1:
If we divide 7 by 15, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 15

On to step 2:
15 goes into 78 5 times with a remainder of 3.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Deduct 75 from 78 and we're left with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 15

Going ahead to step 3:
15 can be fit into 31 2 times, resulting in a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 52.0
If we subtract 30 from 31, we get 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 15

Let's proceed to step 4:
The number 15 fits into 19 1 times, leaving a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 521.0
The remainder is 4 after subtracting 15 from 19.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 15

Step 5:
15 goes into 42 2 times with a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 5212.0
If we take 30 away from 42, we end up with 12.
Append the next digit (3) from the dividend to 12 and continue with: 123 / 15

On to step 6:
If we divide 123 by 15, we get 8 and a remainder of 3.
The number 8 becomes the next digit in our result. 
Result so far: 52128.0
The remainder is 3 after subtracting 120 from 123.
Bring next digit (4) of the dividend behind the 3 and repeat the process: 34 / 15

Moving on to step 7:
15 can be fit into 34 2 times, resulting in a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 521282.0
Subtracting 30 from 34 leaves us with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 15

Going ahead to step 8:
15 can be fit into 42 2 times, resulting in a remainder of 12.
The next digit of our result is 2. 
Result so far: 5212822.0
If we subtract 30 from 42, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 9:
The number 15 fits into 120 8 times, leaving a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 5212822.8
If we take 120 away from 120, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
The number 15 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 5212822.8
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 11:
15 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 5212822.8
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 5212822.8, with a leftover of 0.0.