80743655 ÷ 391 
Let's see how many times 391 fits into 80743655.

Advancing to step 1:
The number 391 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 391

On to step 2:
If we divide 80 by 391, we get 0 and a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 80 and we're left with 80.
Include the next digit (7) from the dividend after 80, then repeat: 807 / 391

Let's proceed to step 3:
807 divided by 391 is 2 with a remainder of 25.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 25 after subtracting 782 from 807.
Include the next digit (4) from the dividend after 25, then repeat: 254 / 391

On to step 4:
254 divided by 391 is 0 with a remainder of 254.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
If we take 0 away from 254, we end up with 254.
Append the next digit (3) from the dividend to 254 and continue with: 2543 / 391

Advancing to step 5:
391 can be fit into 2543 6 times, resulting in a remainder of 197.
Write down 6 as next digit of the result. 
Result so far: 206.0
Subtract 2346 from 2543 to get 197.
Bring next digit (6) of the dividend behind the 197 and repeat the process: 1976 / 391

Step 6:
If we divide 1976 by 391, we get 5 and a remainder of 21.
Put 5 as the next digit of the answer. 
Result so far: 2065.0
The remainder is 21 after subtracting 1955 from 1976.
Bring next digit (5) of the dividend behind the 21 and repeat the process: 215 / 391

Let's proceed to step 7:
If we divide 215 by 391, we get 0 and a remainder of 215.
Write down 0 as next digit of the result. 
Result so far: 20650.0
If we subtract 0 from 215, we get 215.
Take the next digit (5) from the dividend and append it to 215, then repeat: 2155 / 391

On to step 8:
The number 391 fits into 2155 5 times, leaving a remainder of 200.
Use 5 as the next digit of our solution. 
Result so far: 206505.0
The remainder is 200 after subtracting 1955 from 2155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 9:
When dividing 2000 by 391, we get 5 with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 206505.5
If we subtract 1955 from 2000, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 10:
450 divided by 391 is 1 with a remainder of 59.
Write down 1 as next digit of the result. 
Result so far: 206505.51
Subtracting 391 from 450 leaves us with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Going ahead to step 11:
391 can be fit into 590 1 times, resulting in a remainder of 199.
Put 1 as the next digit of the answer. 
Result so far: 206505.511
Deduct 391 from 590 and we're left with 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

The final result is 206505.511 with a remainder of 0.0199.