87119392 ÷ 309 
We want to figure out the number of times 87119392 can be divided by 309.

Step 1:
8 divided by 309 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 309

Going ahead to step 2:
309 can be fit into 87 0 times, resulting in a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 87 leaves us with 87.
Grab the next digit (1) from the dividend, add it to 87, then carry on: 871 / 309

Going ahead to step 3:
When dividing 871 by 309, we get 2 with a remainder of 253.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 618 from 871, we get 253.
Include the next digit (1) from the dividend after 253, then repeat: 2531 / 309

Step 4:
If we divide 2531 by 309, we get 8 and a remainder of 59.
Use 8 as the next digit of our solution. 
Result so far: 28.0
The remainder is 59 after subtracting 2472 from 2531.
Fetch the next digit (9) from the dividend, attach it to 59 and continue: 599 / 309

On to step 5:
The number 309 fits into 599 1 times, leaving a remainder of 290.
Use 1 as the next digit of our solution. 
Result so far: 281.0
The remainder is 290 after subtracting 309 from 599.
Take the next digit (3) from the dividend and append it to 290, then repeat: 2903 / 309

Step 6:
When dividing 2903 by 309, we get 9 with a remainder of 122.
Put 9 as the next digit of the answer. 
Result so far: 2819.0
The remainder is 122 after subtracting 2781 from 2903.
Grab the next digit (9) from the dividend, add it to 122, then carry on: 1229 / 309

Going ahead to step 7:
When dividing 1229 by 309, we get 3 with a remainder of 302.
The number 3 becomes the next digit in our result. 
Result so far: 28193.0
If we subtract 927 from 1229, we get 302.
Take the next digit (2) from the dividend and append it to 302, then repeat: 3022 / 309

Going ahead to step 8:
309 can be fit into 3022 9 times, resulting in a remainder of 241.
The number 9 becomes the next digit in our result. 
Result so far: 281939.0
Deduct 2781 from 3022 and we're left with 241.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2410, and continue the process.

Step 9:
The number 309 fits into 2410 7 times, leaving a remainder of 247.
Write down 7 as next digit of the result. 
Result so far: 281939.7
Deduct 2163 from 2410 and we're left with 247.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

Going ahead to step 10:
If we divide 2470 by 309, we get 7 and a remainder of 307.
The number 7 becomes the next digit in our result. 
Result so far: 281939.77
Subtract 2163 from 2470 to get 307.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3070, and continue the process.

Our division results in 281939.77 with a remaining 0.307.