15965994 divided by 665 
Let's see how many times 665 fits into 15965994.

Moving on to step 1:
665 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 665

Step 2:
15 divided by 665 is 0 with a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Take the next digit (9) from the dividend and append it to 15, then repeat: 159 / 665

Step 3:
If we divide 159 by 665, we get 0 and a remainder of 159.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 159, we get 159.
Take the next digit (6) from the dividend and append it to 159, then repeat: 1596 / 665

Step 4:
1596 divided by 665 is 2 with a remainder of 266.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 1330 away from 1596, we end up with 266.
Take the next digit (5) from the dividend and append it to 266, then repeat: 2665 / 665

On to step 5:
2665 divided by 665 is 4 with a remainder of 5.
Put 4 as the next digit of the answer. 
Result so far: 24.0
Subtract 2660 from 2665 to get 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 665

Advancing to step 6:
When dividing 59 by 665, we get 0 with a remainder of 59.
Write down 0 as next digit of the result. 
Result so far: 240.0
Deduct 0 from 59 and we're left with 59.
Include the next digit (9) from the dividend after 59, then repeat: 599 / 665

Let's proceed to step 7:
665 can be fit into 599 0 times, resulting in a remainder of 599.
Write down 0 as next digit of the result. 
Result so far: 2400.0
Deduct 0 from 599 and we're left with 599.
Take the next digit (4) from the dividend and append it to 599, then repeat: 5994 / 665

Advancing to step 8:
665 can be fit into 5994 9 times, resulting in a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 24009.0
Deduct 5985 from 5994 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 9:
665 can be fit into 90 0 times, resulting in a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 24009.0
If we take 0 away from 90, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 10:
900 divided by 665 is 1 with a remainder of 235.
Record the quotient 1 as the next digit in the result. 
Result so far: 24009.01
If we take 665 away from 900, we end up with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Let's proceed to step 11:
665 goes into 2350 3 times with a remainder of 355.
The number 3 becomes the next digit in our result. 
Result so far: 24009.013
The remainder is 355 after subtracting 1995 from 2350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Advancing to step 12:
665 goes into 3550 5 times with a remainder of 225.
Record the quotient 5 as the next digit in the result. 
Result so far: 24009.0135
Deduct 3325 from 3550 and we're left with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

On to step 13:
665 goes into 2250 3 times with a remainder of 255.
Use 3 as the next digit of our solution. 
Result so far: 24009.01353
Subtract 1995 from 2250 to get 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Step 14:
When dividing 2550 by 665, we get 3 with a remainder of 555.
Record the quotient 3 as the next digit in the result. 
Result so far: 24009.013533
Subtract 1995 from 2550 to get 555.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5550, and continue the process.

After the division, we end up with 24009.013533 and a remainder of 5.55e-05.