12388 divided by 81 
We're looking to find how many times 81 goes into 12388.

Let's proceed to step 1:
1 divided by 81 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 81

Going ahead to step 2:
When dividing 12 by 81, we get 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 81

Going ahead to step 3:
81 goes into 123 1 times with a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 81 away from 123, we end up with 42.
Bring next digit (8) of the dividend behind the 42 and repeat the process: 428 / 81

Step 4:
81 goes into 428 5 times with a remainder of 23.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 405 away from 428, we end up with 23.
Include the next digit (8) from the dividend after 23, then repeat: 238 / 81

Advancing to step 5:
The number 81 fits into 238 2 times, leaving a remainder of 76.
Record the quotient 2 as the next digit in the result. 
Result so far: 152.0
Subtract 162 from 238 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 6:
If we divide 760 by 81, we get 9 and a remainder of 31.
The next digit of our result is 9. 
Result so far: 152.9
If we take 729 away from 760, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 7:
The number 81 fits into 310 3 times, leaving a remainder of 67.
Write down 3 as next digit of the result. 
Result so far: 152.93
The remainder is 67 after subtracting 243 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Let's proceed to step 8:
81 can be fit into 670 8 times, resulting in a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 152.938
If we take 648 away from 670, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 9:
81 can be fit into 220 2 times, resulting in a remainder of 58.
Put 2 as the next digit of the answer. 
Result so far: 152.9382
Deduct 162 from 220 and we're left with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 10:
580 divided by 81 is 7 with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 152.93827
Subtract 567 from 580 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 11:
81 goes into 130 1 times with a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 152.938271
Deduct 81 from 130 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 12:
If we divide 490 by 81, we get 6 and a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 152.9382716
If we take 486 away from 490, 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 13:
81 goes into 40 0 times with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 152.9382716
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 152.9382716 with a remaining 4e-08.