Let's divide 80151495 by 309
Our goal is to divide 80151495 by 309.

On to step 1:
309 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 309

Step 2:
309 can be fit into 80 0 times, resulting in a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Fetch the next digit (1) from the dividend, attach it to 80 and continue: 801 / 309

Step 3:
The number 309 fits into 801 2 times, leaving a remainder of 183.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 618 away from 801, we end up with 183.
Include the next digit (5) from the dividend after 183, then repeat: 1835 / 309

Step 4:
1835 divided by 309 is 5 with a remainder of 290.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
The remainder is 290 after subtracting 1545 from 1835.
Bring next digit (1) of the dividend behind the 290 and repeat the process: 2901 / 309

Going ahead to step 5:
If we divide 2901 by 309, we get 9 and a remainder of 120.
Write down 9 as next digit of the result. 
Result so far: 259.0
If we take 2781 away from 2901, we end up with 120.
Take the next digit (4) from the dividend and append it to 120, then repeat: 1204 / 309

On to step 6:
The number 309 fits into 1204 3 times, leaving a remainder of 277.
The next digit of our result is 3. 
Result so far: 2593.0
Deduct 927 from 1204 and we're left with 277.
Take the next digit (9) from the dividend and append it to 277, then repeat: 2779 / 309

Going ahead to step 7:
2779 divided by 309 is 8 with a remainder of 307.
Write down 8 as next digit of the result. 
Result so far: 25938.0
If we take 2472 away from 2779, we end up with 307.
Grab the next digit (5) from the dividend, add it to 307, then carry on: 3075 / 309

Going ahead to step 8:
309 can be fit into 3075 9 times, resulting in a remainder of 294.
Write down 9 as next digit of the result. 
Result so far: 259389.0
If we take 2781 away from 3075, we end up with 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Moving on to step 9:
2940 divided by 309 is 9 with a remainder of 159.
The next digit of our result is 9. 
Result so far: 259389.9
Deduct 2781 from 2940 and we're left with 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Step 10:
309 can be fit into 1590 5 times, resulting in a remainder of 45.
The next digit of our result is 5. 
Result so far: 259389.95
Deduct 1545 from 1590 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 11:
309 goes into 450 1 times with a remainder of 141.
Record the quotient 1 as the next digit in the result. 
Result so far: 259389.951
If we take 309 away from 450, we end up with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Advancing to step 12:
1410 divided by 309 is 4 with a remainder of 174.
Put 4 as the next digit of the answer. 
Result so far: 259389.9514
If we subtract 1236 from 1410, we get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Moving on to step 13:
1740 divided by 309 is 5 with a remainder of 195.
Record the quotient 5 as the next digit in the result. 
Result so far: 259389.95145
The remainder is 195 after subtracting 1545 from 1740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

On to step 14:
1950 divided by 309 is 6 with a remainder of 96.
The next digit of our result is 6. 
Result so far: 259389.951456
Deduct 1854 from 1950 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Step 15:
The number 309 fits into 960 3 times, leaving a remainder of 33.
The number 3 becomes the next digit in our result. 
Result so far: 259389.9514563
Subtract 927 from 960 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 16:
309 can be fit into 330 1 times, resulting in a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 259389.95145631
Subtracting 309 from 330 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

After the division, we end up with 259389.95145631 and a remainder of 2.1e-08.