We're dividing 81370987 by 309 
Let's see how many times 309 fits into 81370987.

Advancing to step 1:
309 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 309

Going ahead to step 2:
The number 309 fits into 81 0 times, leaving a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Take the next digit (3) from the dividend and append it to 81, then repeat: 813 / 309

Step 3:
813 divided by 309 is 2 with a remainder of 195.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 618 from 813 to get 195.
Fetch the next digit (7) from the dividend, attach it to 195 and continue: 1957 / 309

Advancing to step 4:
1957 divided by 309 is 6 with a remainder of 103.
Write down 6 as next digit of the result. 
Result so far: 26.0
Subtracting 1854 from 1957 leaves us with 103.
Grab the next digit (0) from the dividend, add it to 103, then carry on: 1030 / 309

Step 5:
1030 divided by 309 is 3 with a remainder of 103.
Put 3 as the next digit of the answer. 
Result so far: 263.0
Subtracting 927 from 1030 leaves us with 103.
Take the next digit (9) from the dividend and append it to 103, then repeat: 1039 / 309

Going ahead to step 6:
The number 309 fits into 1039 3 times, leaving a remainder of 112.
Use 3 as the next digit of our solution. 
Result so far: 2633.0
Subtracting 927 from 1039 leaves us with 112.
Grab the next digit (8) from the dividend, add it to 112, then carry on: 1128 / 309

On to step 7:
When dividing 1128 by 309, we get 3 with a remainder of 201.
Use 3 as the next digit of our solution. 
Result so far: 26333.0
Subtract 927 from 1128 to get 201.
Fetch the next digit (7) from the dividend, attach it to 201 and continue: 2017 / 309

Step 8:
The number 309 fits into 2017 6 times, leaving a remainder of 163.
Use 6 as the next digit of our solution. 
Result so far: 263336.0
Deduct 1854 from 2017 and we're left with 163.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

Moving on to step 9:
309 can be fit into 1630 5 times, resulting in a remainder of 85.
The number 5 becomes the next digit in our result. 
Result so far: 263336.5
Subtracting 1545 from 1630 leaves us with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Step 10:
The number 309 fits into 850 2 times, leaving a remainder of 232.
The number 2 becomes the next digit in our result. 
Result so far: 263336.52
If we subtract 618 from 850, we get 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Let's proceed to step 11:
When dividing 2320 by 309, we get 7 with a remainder of 157.
The number 7 becomes the next digit in our result. 
Result so far: 263336.527
Subtracting 2163 from 2320 leaves us with 157.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

Moving on to step 12:
309 goes into 1570 5 times with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 263336.5275
Subtract 1545 from 1570 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 13:
309 can be fit into 250 0 times, resulting in a remainder of 250.
Use 0 as the next digit of our solution. 
Result so far: 263336.5275
The remainder is 250 after subtracting 0 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Advancing to step 14:
When dividing 2500 by 309, we get 8 with a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 263336.527508
The remainder is 28 after subtracting 2472 from 2500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 15:
If we divide 280 by 309, we get 0 and a remainder of 280.
Put 0 as the next digit of the answer. 
Result so far: 263336.527508
Subtract 0 from 280 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Going ahead to step 16:
When dividing 2800 by 309, we get 9 with a remainder of 19.
Record the quotient 9 as the next digit in the result. 
Result so far: 263336.52750809
The remainder is 19 after subtracting 2781 from 2800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

In conclusion, the division gives 263336.52750809 with a balance of 1.9e-08.