78801125 ÷ 15 
We want to divide 78801125 by 15.

Moving on to step 1:
15 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 15

Let's proceed to step 2:
When dividing 78 by 15, we get 5 with a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtracting 75 from 78 leaves us with 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 15

Going ahead to step 3:
When dividing 38 by 15, we get 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 52.0
If we subtract 30 from 38, we get 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 15

Let's proceed to step 4:
If we divide 80 by 15, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 525.0
The remainder is 5 after subtracting 75 from 80.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 15

On to step 5:
15 can be fit into 51 3 times, resulting in a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 5253.0
Subtracting 45 from 51 leaves us with 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 15

Moving on to step 6:
If we divide 61 by 15, we get 4 and a remainder of 1.
The next digit of our result is 4. 
Result so far: 52534.0
Subtracting 60 from 61 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 15

Advancing to step 7:
12 divided by 15 is 0 with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 525340.0
If we take 0 away from 12, we end up with 12.
Append the next digit (5) from the dividend to 12 and continue with: 125 / 15

On to step 8:
15 goes into 125 8 times with a remainder of 5.
Record the quotient 8 as the next digit in the result. 
Result so far: 5253408.0
Deduct 120 from 125 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 9:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 5253408.3
Deduct 45 from 50 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 10:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 5253408.33
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 5253408.33, with a leftover of 0.005.