12039892 ÷ 386 
We want to figure out the number of times 12039892 can be divided by 386.

On to step 1:
If we divide 1 by 386, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 386

On to step 2:
386 goes into 12 0 times with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Append the next digit (0) from the dividend to 12 and continue with: 120 / 386

Moving on to step 3:
386 goes into 120 0 times with a remainder of 120.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 120 after subtracting 0 from 120.
Include the next digit (3) from the dividend after 120, then repeat: 1203 / 386

On to step 4:
When dividing 1203 by 386, we get 3 with a remainder of 45.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 1158 away from 1203, we end up with 45.
Include the next digit (9) from the dividend after 45, then repeat: 459 / 386

Let's proceed to step 5:
386 goes into 459 1 times with a remainder of 73.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
If we take 386 away from 459, we end up with 73.
Grab the next digit (8) from the dividend, add it to 73, then carry on: 738 / 386

Let's proceed to step 6:
738 divided by 386 is 1 with a remainder of 352.
The next digit of our result is 1. 
Result so far: 311.0
The remainder is 352 after subtracting 386 from 738.
Append the next digit (9) from the dividend to 352 and continue with: 3529 / 386

Moving on to step 7:
386 goes into 3529 9 times with a remainder of 55.
The number 9 becomes the next digit in our result. 
Result so far: 3119.0
If we subtract 3474 from 3529, we get 55.
Take the next digit (2) from the dividend and append it to 55, then repeat: 552 / 386

On to step 8:
386 goes into 552 1 times with a remainder of 166.
The next digit of our result is 1. 
Result so far: 31191.0
The remainder is 166 after subtracting 386 from 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

On to step 9:
1660 divided by 386 is 4 with a remainder of 116.
Use 4 as the next digit of our solution. 
Result so far: 31191.4
If we take 1544 away from 1660, we end up with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Moving on to step 10:
The number 386 fits into 1160 3 times, leaving a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 31191.43
Subtract 1158 from 1160 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 11:
The number 386 fits into 20 0 times, leaving a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 31191.43
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 12:
The number 386 fits into 200 0 times, leaving a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 31191.43
The remainder is 200 after subtracting 0 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

After the division, we end up with 31191.43 and a remainder of 0.002.