989378 divided by 12 
Our goal is to divide 989378 by 12.

On to step 1:
9 divided by 12 is 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 12

Step 2:
12 goes into 98 8 times with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtract 96 from 98 to get 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 12

Moving on to step 3:
29 divided by 12 is 2 with a remainder of 5.
The next digit of our result is 2. 
Result so far: 82.0
Deduct 24 from 29 and we're left with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 12

Step 4:
The number 12 fits into 53 4 times, leaving a remainder of 5.
Write down 4 as next digit of the result. 
Result so far: 824.0
The remainder is 5 after subtracting 48 from 53.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 12

Going ahead to step 5:
12 can be fit into 57 4 times, resulting in a remainder of 9.
The number 4 becomes the next digit in our result. 
Result so far: 8244.0
Deduct 48 from 57 and we're left with 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 12

On to step 6:
If we divide 98 by 12, we get 8 and a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 82448.0
Subtract 96 from 98 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.

Step 7:
12 goes into 20 1 times with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 82448.1
Deduct 12 from 20 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 8:
If we divide 80 by 12, we get 6 and a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 82448.16
If we take 72 away from 80, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
80 divided by 12 is 6 with a remainder of 8.
The next digit of our result is 6. 
Result so far: 82448.166
If we subtract 72 from 80, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 82448.166, with a leftover of 0.0008.