We look at the division of 19904478 by 987 
Let's see how many times 987 fits into 19904478.

Going ahead to step 1:
The number 987 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 987

Let's proceed to step 2:
19 divided by 987 is 0 with a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 19 after subtracting 0 from 19.
Take the next digit (9) from the dividend and append it to 19, then repeat: 199 / 987

Advancing to step 3:
The number 987 fits into 199 0 times, leaving a remainder of 199.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 199, we end up with 199.
Fetch the next digit (0) from the dividend, attach it to 199 and continue: 1990 / 987

Moving on to step 4:
987 can be fit into 1990 2 times, resulting in a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 1974 from 1990 to get 16.
Fetch the next digit (4) from the dividend, attach it to 16 and continue: 164 / 987

Step 5:
164 divided by 987 is 0 with a remainder of 164.
Use 0 as the next digit of our solution. 
Result so far: 20.0
Subtracting 0 from 164 leaves us with 164.
Append the next digit (4) from the dividend to 164 and continue with: 1644 / 987

Step 6:
1644 divided by 987 is 1 with a remainder of 657.
Put 1 as the next digit of the answer. 
Result so far: 201.0
If we take 987 away from 1644, we end up with 657.
Take the next digit (7) from the dividend and append it to 657, then repeat: 6577 / 987

Advancing to step 7:
If we divide 6577 by 987, we get 6 and a remainder of 655.
Use 6 as the next digit of our solution. 
Result so far: 2016.0
If we take 5922 away from 6577, we end up with 655.
Fetch the next digit (8) from the dividend, attach it to 655 and continue: 6558 / 987

Moving on to step 8:
6558 divided by 987 is 6 with a remainder of 636.
The number 6 becomes the next digit in our result. 
Result so far: 20166.0
The remainder is 636 after subtracting 5922 from 6558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6360, and continue the process.

Moving on to step 9:
6360 divided by 987 is 6 with a remainder of 438.
Record the quotient 6 as the next digit in the result. 
Result so far: 20166.6
If we subtract 5922 from 6360, we get 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

On to step 10:
When dividing 4380 by 987, we get 4 with a remainder of 432.
The number 4 becomes the next digit in our result. 
Result so far: 20166.64
Deduct 3948 from 4380 and we're left with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Let's proceed to step 11:
987 can be fit into 4320 4 times, resulting in a remainder of 372.
Write down 4 as next digit of the result. 
Result so far: 20166.644
Subtracting 3948 from 4320 leaves us with 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

The quotient of the division is 20166.644, and the remainder is 0.0372.