139890 ÷ 33 
We want to divide 139890 by 33.

Advancing to step 1:
If we divide 1 by 33, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 33

Moving on to step 2:
The number 33 fits into 13 0 times, leaving a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 13, we get 13.
Include the next digit (9) from the dividend after 13, then repeat: 139 / 33

On to step 3:
If we divide 139 by 33, we get 4 and a remainder of 7.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 132 from 139 leaves us with 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 33

Moving on to step 4:
If we divide 78 by 33, we get 2 and a remainder of 12.
The next digit of our result is 2. 
Result so far: 42.0
Deduct 66 from 78 and we're left with 12.
Bring next digit (9) of the dividend behind the 12 and repeat the process: 129 / 33

Advancing to step 5:
33 goes into 129 3 times with a remainder of 30.
Write down 3 as next digit of the result. 
Result so far: 423.0
The remainder is 30 after subtracting 99 from 129.
Bring next digit (0) of the dividend behind the 30 and repeat the process: 300 / 33

On to step 6:
The number 33 fits into 300 9 times, leaving a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 4239.0
Subtract 297 from 300 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
When dividing 30 by 33, we get 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 4239.0
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
33 goes into 300 9 times with a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 4239.09
If we take 297 away from 300, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 9:
If we divide 30 by 33, we get 0 and a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 4239.09
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 10:
33 goes into 300 9 times with a remainder of 3.
The next digit of our result is 9. 
Result so far: 4239.0909
The remainder is 3 after subtracting 297 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 11:
30 divided by 33 is 0 with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 4239.0909
If we take 0 away from 30, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 12:
The number 33 fits into 300 9 times, leaving a remainder of 3.
The next digit of our result is 9. 
Result so far: 4239.090909
The remainder is 3 after subtracting 297 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 13:
The number 33 fits into 30 0 times, leaving a remainder of 30.
The next digit of our result is 0. 
Result so far: 4239.090909
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 14:
When dividing 300 by 33, we get 9 with a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 4239.09090909
Deduct 297 from 300 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Our division results in 4239.09090909 with a remaining 3e-09.