We look at the division of 77192255 by 309 
Our goal is to divide 77192255 by 309.

Advancing to step 1:
The number 309 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 309

Moving on to step 2:
When dividing 77 by 309, we get 0 with a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 77 and we're left with 77.
Grab the next digit (1) from the dividend, add it to 77, then carry on: 771 / 309

On to step 3:
The number 309 fits into 771 2 times, leaving a remainder of 153.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 618 from 771 leaves us with 153.
Fetch the next digit (9) from the dividend, attach it to 153 and continue: 1539 / 309

Let's proceed to step 4:
309 can be fit into 1539 4 times, resulting in a remainder of 303.
Use 4 as the next digit of our solution. 
Result so far: 24.0
If we subtract 1236 from 1539, we get 303.
Include the next digit (2) from the dividend after 303, then repeat: 3032 / 309

Moving on to step 5:
309 goes into 3032 9 times with a remainder of 251.
Put 9 as the next digit of the answer. 
Result so far: 249.0
If we take 2781 away from 3032, we end up with 251.
Append the next digit (2) from the dividend to 251 and continue with: 2512 / 309

Going ahead to step 6:
2512 divided by 309 is 8 with a remainder of 40.
The next digit of our result is 8. 
Result so far: 2498.0
If we take 2472 away from 2512, we end up with 40.
Include the next digit (5) from the dividend after 40, then repeat: 405 / 309

On to step 7:
When dividing 405 by 309, we get 1 with a remainder of 96.
Put 1 as the next digit of the answer. 
Result so far: 24981.0
Subtracting 309 from 405 leaves us with 96.
Include the next digit (5) from the dividend after 96, then repeat: 965 / 309

On to step 8:
When dividing 965 by 309, we get 3 with a remainder of 38.
Use 3 as the next digit of our solution. 
Result so far: 249813.0
If we subtract 927 from 965, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 9:
380 divided by 309 is 1 with a remainder of 71.
The number 1 becomes the next digit in our result. 
Result so far: 249813.1
Deduct 309 from 380 and we're left with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 10:
If we divide 710 by 309, we get 2 and a remainder of 92.
Write down 2 as next digit of the result. 
Result so far: 249813.12
If we subtract 618 from 710, we get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Moving on to step 11:
309 goes into 920 2 times with a remainder of 302.
Use 2 as the next digit of our solution. 
Result so far: 249813.122
Subtract 618 from 920 to get 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Our division results in 249813.122 with a remaining 0.0302.