80900443 divided by 12 
We want to figure out the number of times 80900443 can be divided by 12.

Moving on to step 1:
12 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 12

Let's proceed to step 2:
80 divided by 12 is 6 with a remainder of 8.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 72 from 80 leaves us with 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 12

Step 3:
The number 12 fits into 89 7 times, leaving a remainder of 5.
The next digit of our result is 7. 
Result so far: 67.0
If we take 84 away from 89, we end up with 5.
Grab the next digit (0) from the dividend, add it to 5, then carry on: 50 / 12

Going ahead to step 4:
If we divide 50 by 12, we get 4 and a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 674.0
The remainder is 2 after subtracting 48 from 50.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 12

Going ahead to step 5:
When dividing 20 by 12, we get 1 with a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 6741.0
The remainder is 8 after subtracting 12 from 20.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 12

Step 6:
12 can be fit into 84 7 times, resulting in a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 67417.0
Deduct 84 from 84 and we're left with 0.
Append the next digit (4) from the dividend to 0 and continue with: 4 / 12

On to step 7:
The number 12 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 674170.0
Subtract 0 from 4 to get 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 12

On to step 8:
12 goes into 43 3 times with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 6741703.0
If we subtract 36 from 43, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 9:
12 goes into 70 5 times with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 6741703.5
Subtract 60 from 70 to 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.

Going ahead to step 10:
12 can be fit into 100 8 times, resulting in a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 6741703.58
If we subtract 96 from 100, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 11:
12 can be fit into 40 3 times, resulting in a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 6741703.583
Subtracting 36 from 40 leaves us 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.

On to step 12:
If we divide 40 by 12, we get 3 and a remainder of 4.
The next digit of our result is 3. 
Result so far: 6741703.5833
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

In conclusion, the division gives 6741703.5833 with a balance of 4e-05.