We're dividing 149991 by 24 
We're looking to find how many times 24 goes into 149991.

Advancing to step 1:
When dividing 1 by 24, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 24

Advancing to step 2:
The number 24 fits into 14 0 times, leaving a remainder of 14.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 14 to get 14.
Bring next digit (9) of the dividend behind the 14 and repeat the process: 149 / 24

Moving on to step 3:
If we divide 149 by 24, we get 6 and a remainder of 5.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we take 144 away from 149, we end up with 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 24

On to step 4:
When dividing 59 by 24, we get 2 with a remainder of 11.
Put 2 as the next digit of the answer. 
Result so far: 62.0
Subtracting 48 from 59 leaves us with 11.
Grab the next digit (9) from the dividend, add it to 11, then carry on: 119 / 24

Let's proceed to step 5:
If we divide 119 by 24, we get 4 and a remainder of 23.
Write down 4 as next digit of the result. 
Result so far: 624.0
If we take 96 away from 119, we end up with 23.
Take the next digit (1) from the dividend and append it to 23, then repeat: 231 / 24

Let's proceed to step 6:
When dividing 231 by 24, we get 9 with a remainder of 15.
The number 9 becomes the next digit in our result. 
Result so far: 6249.0
If we take 216 away from 231, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
When dividing 150 by 24, we get 6 with a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 6249.6
Deduct 144 from 150 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
If we divide 60 by 24, we get 2 and a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 6249.62
Subtract 48 from 60 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 9:
24 goes into 120 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 6249.625
If we subtract 120 from 120, 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.

Moving on to step 10:
0 divided by 24 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 6249.625
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.

Step 11:
0 divided by 24 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 6249.625
Subtracting 0 from 0 leaves us 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.

The final outcome is 6249.625, with a leftover of 0.0.