We're dividing 309890 by 16 
We want to divide 309890 by 16.

Step 1:
If we divide 3 by 16, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 16

Going ahead to step 2:
16 goes into 30 1 times with a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 16 from 30 to get 14.
Fetch the next digit (9) from the dividend, attach it to 14 and continue: 149 / 16

Moving on to step 3:
The number 16 fits into 149 9 times, leaving a remainder of 5.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
The remainder is 5 after subtracting 144 from 149.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 16

Going ahead to step 4:
The number 16 fits into 58 3 times, leaving a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 193.0
If we subtract 48 from 58, we get 10.
Append the next digit (9) from the dividend to 10 and continue with: 109 / 16

Going ahead to step 5:
If we divide 109 by 16, we get 6 and a remainder of 13.
Record the quotient 6 as the next digit in the result. 
Result so far: 1936.0
Subtracting 96 from 109 leaves us with 13.
Grab the next digit (0) from the dividend, add it to 13, then carry on: 130 / 16

Moving on to step 6:
130 divided by 16 is 8 with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 19368.0
If we take 128 away from 130, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 7:
16 can be fit into 20 1 times, resulting in a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 19368.1
The remainder is 4 after subtracting 16 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 8:
16 can be fit into 40 2 times, resulting in a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 19368.12
The remainder is 8 after subtracting 32 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
If we divide 80 by 16, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 19368.125
The remainder is 0 after subtracting 80 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
16 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 19368.125
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 11:
16 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 19368.125
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 19368.125, with a leftover of 0.0.