12582100 ÷ 663 
We want to divide 12582100 by 663.

Moving on to step 1:
When dividing 1 by 663, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 663

Advancing to step 2:
If we divide 12 by 663, we get 0 and a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Take the next digit (5) from the dividend and append it to 12, then repeat: 125 / 663

Let's proceed to step 3:
663 goes into 125 0 times with a remainder of 125.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 125 and we're left with 125.
Grab the next digit (8) from the dividend, add it to 125, then carry on: 1258 / 663

Going ahead to step 4:
1258 divided by 663 is 1 with a remainder of 595.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 595 after subtracting 663 from 1258.
Append the next digit (2) from the dividend to 595 and continue with: 5952 / 663

Going ahead to step 5:
If we divide 5952 by 663, we get 8 and a remainder of 648.
The next digit of our result is 8. 
Result so far: 18.0
If we take 5304 away from 5952, we end up with 648.
Take the next digit (1) from the dividend and append it to 648, then repeat: 6481 / 663

Moving on to step 6:
If we divide 6481 by 663, we get 9 and a remainder of 514.
Put 9 as the next digit of the answer. 
Result so far: 189.0
Subtract 5967 from 6481 to get 514.
Fetch the next digit (0) from the dividend, attach it to 514 and continue: 5140 / 663

On to step 7:
663 can be fit into 5140 7 times, resulting in a remainder of 499.
The next digit of our result is 7. 
Result so far: 1897.0
If we subtract 4641 from 5140, we get 499.
Include the next digit (0) from the dividend after 499, then repeat: 4990 / 663

Advancing to step 8:
663 can be fit into 4990 7 times, resulting in a remainder of 349.
Use 7 as the next digit of our solution. 
Result so far: 18977.0
If we take 4641 away from 4990, we end up with 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

Step 9:
663 goes into 3490 5 times with a remainder of 175.
The next digit of our result is 5. 
Result so far: 18977.5
If we take 3315 away from 3490, we end up with 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

On to step 10:
663 can be fit into 1750 2 times, resulting in a remainder of 424.
The next digit of our result is 2. 
Result so far: 18977.52
Subtracting 1326 from 1750 leaves us with 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Step 11:
The number 663 fits into 4240 6 times, leaving a remainder of 262.
Use 6 as the next digit of our solution. 
Result so far: 18977.526
The remainder is 262 after subtracting 3978 from 4240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

Moving on to step 12:
663 goes into 2620 3 times with a remainder of 631.
The number 3 becomes the next digit in our result. 
Result so far: 18977.5263
If we take 1989 away from 2620, we end up with 631.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6310, and continue the process.

Let's proceed to step 13:
When dividing 6310 by 663, we get 9 with a remainder of 343.
The number 9 becomes the next digit in our result. 
Result so far: 18977.52639
Subtracting 5967 from 6310 leaves us with 343.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3430, and continue the process.

On to step 14:
When dividing 3430 by 663, we get 5 with a remainder of 115.
Write down 5 as next digit of the result. 
Result so far: 18977.526395
If we take 3315 away from 3430, we end up with 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Let's proceed to step 15:
663 can be fit into 1150 1 times, resulting in a remainder of 487.
Put 1 as the next digit of the answer. 
Result so far: 18977.5263951
Deduct 663 from 1150 and we're left with 487.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4870, and continue the process.

Advancing to step 16:
4870 divided by 663 is 7 with a remainder of 229.
Write down 7 as next digit of the result. 
Result so far: 18977.52639517
Subtracting 4641 from 4870 leaves us with 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

The final result is 18977.52639517 with a remainder of 2.29e-07.