We're dividing 12424 by 86 
We want to figure out the number of times 12424 can be divided by 86.

On to step 1:
1 divided by 86 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 86

Advancing to step 2:
86 goes into 12 0 times with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Append the next digit (4) from the dividend to 12 and continue with: 124 / 86

On to step 3:
The number 86 fits into 124 1 times, leaving a remainder of 38.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 86 away from 124, we end up with 38.
Append the next digit (2) from the dividend to 38 and continue with: 382 / 86

Step 4:
86 goes into 382 4 times with a remainder of 38.
The next digit of our result is 4. 
Result so far: 14.0
Subtracting 344 from 382 leaves us with 38.
Grab the next digit (4) from the dividend, add it to 38, then carry on: 384 / 86

Let's proceed to step 5:
If we divide 384 by 86, we get 4 and a remainder of 40.
Record the quotient 4 as the next digit in the result. 
Result so far: 144.0
The remainder is 40 after subtracting 344 from 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 6:
400 divided by 86 is 4 with a remainder of 56.
The next digit of our result is 4. 
Result so far: 144.4
Subtract 344 from 400 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 7:
When dividing 560 by 86, we get 6 with a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 144.46
The remainder is 44 after subtracting 516 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 8:
If we divide 440 by 86, we get 5 and a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 144.465
If we subtract 430 from 440, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
86 can be fit into 100 1 times, resulting in a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 144.4651
Deduct 86 from 100 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 10:
86 goes into 140 1 times with a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 144.46511
If we subtract 86 from 140, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The quotient of the division is 144.46511, and the remainder is 5.4e-05.