We look at the division of 16404142 by 90 
Let's see how many times 90 fits into 16404142.

Advancing to step 1:
If we divide 1 by 90, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 90

Step 2:
The number 90 fits into 16 0 times, leaving a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 16 and we're left with 16.
Take the next digit (4) from the dividend and append it to 16, then repeat: 164 / 90

Going ahead to step 3:
90 can be fit into 164 1 times, resulting in a remainder of 74.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 74 after subtracting 90 from 164.
Include the next digit (0) from the dividend after 74, then repeat: 740 / 90

Going ahead to step 4:
When dividing 740 by 90, we get 8 with a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
If we take 720 away from 740, we end up with 20.
Bring next digit (4) of the dividend behind the 20 and repeat the process: 204 / 90

On to step 5:
If we divide 204 by 90, we get 2 and a remainder of 24.
The next digit of our result is 2. 
Result so far: 182.0
If we take 180 away from 204, we end up with 24.
Take the next digit (1) from the dividend and append it to 24, then repeat: 241 / 90

Advancing to step 6:
90 goes into 241 2 times with a remainder of 61.
Record the quotient 2 as the next digit in the result. 
Result so far: 1822.0
If we take 180 away from 241, we end up with 61.
Bring next digit (4) of the dividend behind the 61 and repeat the process: 614 / 90

Going ahead to step 7:
The number 90 fits into 614 6 times, leaving a remainder of 74.
Record the quotient 6 as the next digit in the result. 
Result so far: 18226.0
The remainder is 74 after subtracting 540 from 614.
Fetch the next digit (2) from the dividend, attach it to 74 and continue: 742 / 90

Going ahead to step 8:
The number 90 fits into 742 8 times, leaving a remainder of 22.
The next digit of our result is 8. 
Result so far: 182268.0
If we subtract 720 from 742, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 9:
90 can be fit into 220 2 times, resulting in a remainder of 40.
The next digit of our result is 2. 
Result so far: 182268.2
If we take 180 away from 220, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 10:
90 goes into 400 4 times with a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 182268.24
Subtracting 360 from 400 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 11:
If we divide 400 by 90, we get 4 and a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 182268.244
If we take 360 away from 400, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

After the division, we end up with 182268.244 and a remainder of 0.004.