154900 divided by 12 
We want to divide 154900 by 12.

Going ahead to step 1:
When dividing 1 by 12, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 12

Moving on to step 2:
The number 12 fits into 15 1 times, leaving a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 3 after subtracting 12 from 15.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 12

Going ahead to step 3:
12 goes into 34 2 times with a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 24 from 34 and we're left with 10.
Take the next digit (9) from the dividend and append it to 10, then repeat: 109 / 12

Moving on to step 4:
The number 12 fits into 109 9 times, leaving a remainder of 1.
The next digit of our result is 9. 
Result so far: 129.0
Deduct 108 from 109 and we're left with 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 12

Step 5:
12 goes into 10 0 times with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 1290.0
If we take 0 away from 10, we end up with 10.
Take the next digit (0) from the dividend and append it to 10, then repeat: 100 / 12

On to step 6:
12 can be fit into 100 8 times, resulting in a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 12908.0
Deduct 96 from 100 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 7:
40 divided by 12 is 3 with a remainder of 4.
The next digit of our result is 3. 
Result so far: 12908.3
If we take 36 away from 40, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 8:
If we divide 40 by 12, we get 3 and a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 12908.33
Deduct 36 from 40 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 12908.33 with a remaining 0.004.