We're dividing 81516915 by 659 
We want to figure out the number of times 81516915 can be divided by 659.

Moving on to step 1:
When dividing 8 by 659, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 659

Step 2:
81 divided by 659 is 0 with a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 81 after subtracting 0 from 81.
Include the next digit (5) from the dividend after 81, then repeat: 815 / 659

On to step 3:
When dividing 815 by 659, we get 1 with a remainder of 156.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 659 from 815, we get 156.
Take the next digit (1) from the dividend and append it to 156, then repeat: 1561 / 659

Moving on to step 4:
659 goes into 1561 2 times with a remainder of 243.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtracting 1318 from 1561 leaves us with 243.
Bring next digit (6) of the dividend behind the 243 and repeat the process: 2436 / 659

Going ahead to step 5:
The number 659 fits into 2436 3 times, leaving a remainder of 459.
Write down 3 as next digit of the result. 
Result so far: 123.0
If we subtract 1977 from 2436, we get 459.
Include the next digit (9) from the dividend after 459, then repeat: 4599 / 659

Step 6:
When dividing 4599 by 659, we get 6 with a remainder of 645.
Write down 6 as next digit of the result. 
Result so far: 1236.0
Subtracting 3954 from 4599 leaves us with 645.
Fetch the next digit (1) from the dividend, attach it to 645 and continue: 6451 / 659

Step 7:
The number 659 fits into 6451 9 times, leaving a remainder of 520.
Put 9 as the next digit of the answer. 
Result so far: 12369.0
If we subtract 5931 from 6451, we get 520.
Fetch the next digit (5) from the dividend, attach it to 520 and continue: 5205 / 659

Moving on to step 8:
659 goes into 5205 7 times with a remainder of 592.
The number 7 becomes the next digit in our result. 
Result so far: 123697.0
Deduct 4613 from 5205 and we're left with 592.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5920, and continue the process.

Let's proceed to step 9:
When dividing 5920 by 659, we get 8 with a remainder of 648.
Write down 8 as next digit of the result. 
Result so far: 123697.8
If we take 5272 away from 5920, we end up with 648.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

Let's proceed to step 10:
6480 divided by 659 is 9 with a remainder of 549.
The next digit of our result is 9. 
Result so far: 123697.89
Subtract 5931 from 6480 to get 549.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5490, and continue the process.

Advancing to step 11:
5490 divided by 659 is 8 with a remainder of 218.
Use 8 as the next digit of our solution. 
Result so far: 123697.898
If we take 5272 away from 5490, we end up with 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Let's proceed to step 12:
2180 divided by 659 is 3 with a remainder of 203.
Put 3 as the next digit of the answer. 
Result so far: 123697.8983
If we subtract 1977 from 2180, we get 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

Moving on to step 13:
659 can be fit into 2030 3 times, resulting in a remainder of 53.
The number 3 becomes the next digit in our result. 
Result so far: 123697.89833
If we take 1977 away from 2030, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

The final outcome is 123697.89833, with a leftover of 5.3e-05.