We look at the division of 11890421 by 663 
We want to divide 11890421 by 663.

Let's proceed to step 1:
The number 663 fits into 1 0 times, leaving 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 (1) from the dividend after 1, then repeat: 11 / 663

Moving on to step 2:
663 can be fit into 11 0 times, resulting in a remainder of 11.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 11, we end up with 11.
Take the next digit (8) from the dividend and append it to 11, then repeat: 118 / 663

Moving on to step 3:
When dividing 118 by 663, we get 0 with a remainder of 118.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 118 to get 118.
Take the next digit (9) from the dividend and append it to 118, then repeat: 1189 / 663

Moving on to step 4:
1189 divided by 663 is 1 with a remainder of 526.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 526 after subtracting 663 from 1189.
Include the next digit (0) from the dividend after 526, then repeat: 5260 / 663

On to step 5:
When dividing 5260 by 663, we get 7 with a remainder of 619.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
The remainder is 619 after subtracting 4641 from 5260.
Append the next digit (4) from the dividend to 619 and continue with: 6194 / 663

Advancing to step 6:
If we divide 6194 by 663, we get 9 and a remainder of 227.
The next digit of our result is 9. 
Result so far: 179.0
If we take 5967 away from 6194, we end up with 227.
Fetch the next digit (2) from the dividend, attach it to 227 and continue: 2272 / 663

Advancing to step 7:
2272 divided by 663 is 3 with a remainder of 283.
Use 3 as the next digit of our solution. 
Result so far: 1793.0
If we subtract 1989 from 2272, we get 283.
Include the next digit (1) from the dividend after 283, then repeat: 2831 / 663

Advancing to step 8:
663 goes into 2831 4 times with a remainder of 179.
The number 4 becomes the next digit in our result. 
Result so far: 17934.0
The remainder is 179 after subtracting 2652 from 2831.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

Moving on to step 9:
The number 663 fits into 1790 2 times, leaving a remainder of 464.
Record the quotient 2 as the next digit in the result. 
Result so far: 17934.2
Deduct 1326 from 1790 and we're left with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

On to step 10:
When dividing 4640 by 663, we get 6 with a remainder of 662.
Record the quotient 6 as the next digit in the result. 
Result so far: 17934.26
Subtract 3978 from 4640 to get 662.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6620, and continue the process.

Moving on to step 11:
663 can be fit into 6620 9 times, resulting in a remainder of 653.
Use 9 as the next digit of our solution. 
Result so far: 17934.269
If we take 5967 away from 6620, we end up with 653.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6530, and continue the process.

Moving on to step 12:
663 can be fit into 6530 9 times, resulting in a remainder of 563.
Use 9 as the next digit of our solution. 
Result so far: 17934.2699
The remainder is 563 after subtracting 5967 from 6530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5630, and continue the process.

The final result is 17934.2699 with a remainder of 0.00563.