Let's divide 22510816 by 15
Our goal is to divide 22510816 by 15.

Going ahead to step 1:
15 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (2) of the dividend behind the 2 and repeat the process: 22 / 15

Advancing to step 2:
15 can be fit into 22 1 times, resulting in a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 15 from 22, we get 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 15

Step 3:
When dividing 75 by 15, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
Subtract 75 from 75 to get 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 15

On to step 4:
If we divide 1 by 15, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 150.0
If we take 0 away from 1, we end up with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 15

Going ahead to step 5:
If we divide 10 by 15, we get 0 and a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 1500.0
If we subtract 0 from 10, we get 10.
Include the next digit (8) from the dividend after 10, then repeat: 108 / 15

Going ahead to step 6:
15 can be fit into 108 7 times, resulting in a remainder of 3.
The next digit of our result is 7. 
Result so far: 15007.0
Deduct 105 from 108 and we're left with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 15

Step 7:
31 divided by 15 is 2 with a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 150072.0
Subtract 30 from 31 to get 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 15

Going ahead to step 8:
15 can be fit into 16 1 times, resulting in a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1500721.0
Subtract 15 from 16 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 9:
The number 15 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 1500721.0
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 10:
If we divide 100 by 15, we get 6 and a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 1500721.06
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 11:
If we divide 100 by 15, we get 6 and a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 1500721.066
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 1500721.066, with a leftover of 0.001.