Let's divide 65815131 by 1
We want to figure out the number of times 65815131 can be divided by 1.

Step 1:
1 goes into 6 6 times with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 0 after subtracting 6 from 6.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 1

Let's proceed to step 2:
5 divided by 1 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 65.0
If we subtract 5 from 5, we get 0.
Fetch the next digit (8) from the dividend, attach it to 0 and continue: 8 / 1

Going ahead to step 3:
When dividing 8 by 1, we get 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 658.0
If we subtract 8 from 8, we get 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 1

On to step 4:
If we divide 1 by 1, we get 1 and a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 6581.0
Deduct 1 from 1 and we're left with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 1

Step 5:
5 divided by 1 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 65815.0
Deduct 5 from 5 and we're left with 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 1

Moving on to step 6:
1 divided by 1 is 1 with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 658151.0
Deduct 1 from 1 and we're left with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 1

Step 7:
1 can be fit into 3 3 times, resulting in a remainder of 0.
The next digit of our result is 3. 
Result so far: 6581513.0
The remainder is 0 after subtracting 3 from 3.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 1

Moving on to step 8:
1 divided by 1 is 1 with a remainder of 0.
The next digit of our result is 1. 
Result so far: 65815131.0
Subtracting 1 from 1 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.

Going ahead to step 9:
0 divided by 1 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 65815131.0
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.

Let's proceed to step 10:
If we divide 0 by 1, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 65815131.0
If we take 0 away from 0, 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.

The final outcome is 65815131.0, with a leftover of 0.0.