75729808 ÷ 309 
We want to figure out the number of times 75729808 can be divided by 309.

On to step 1:
309 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (5) from the dividend, attach it to 7 and continue: 75 / 309

On to step 2:
When dividing 75 by 309, we get 0 with a remainder of 75.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 75 after subtracting 0 from 75.
Fetch the next digit (7) from the dividend, attach it to 75 and continue: 757 / 309

Moving on to step 3:
757 divided by 309 is 2 with a remainder of 139.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 618 away from 757, we end up with 139.
Append the next digit (2) from the dividend to 139 and continue with: 1392 / 309

Let's proceed to step 4:
If we divide 1392 by 309, we get 4 and a remainder of 156.
Put 4 as the next digit of the answer. 
Result so far: 24.0
Subtract 1236 from 1392 to get 156.
Fetch the next digit (9) from the dividend, attach it to 156 and continue: 1569 / 309

Let's proceed to step 5:
The number 309 fits into 1569 5 times, leaving a remainder of 24.
The next digit of our result is 5. 
Result so far: 245.0
If we subtract 1545 from 1569, we get 24.
Include the next digit (8) from the dividend after 24, then repeat: 248 / 309

Let's proceed to step 6:
248 divided by 309 is 0 with a remainder of 248.
Write down 0 as next digit of the result. 
Result so far: 2450.0
The remainder is 248 after subtracting 0 from 248.
Include the next digit (0) from the dividend after 248, then repeat: 2480 / 309

Advancing to step 7:
When dividing 2480 by 309, we get 8 with a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 24508.0
If we subtract 2472 from 2480, we get 8.
Bring next digit (8) of the dividend behind the 8 and repeat the process: 88 / 309

Advancing to step 8:
309 goes into 88 0 times with a remainder of 88.
Write down 0 as next digit of the result. 
Result so far: 245080.0
If we take 0 away from 88, we end up with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

On to step 9:
When dividing 880 by 309, we get 2 with a remainder of 262.
The next digit of our result is 2. 
Result so far: 245080.2
If we take 618 away from 880, we end up with 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

Going ahead to step 10:
309 can be fit into 2620 8 times, resulting in a remainder of 148.
Record the quotient 8 as the next digit in the result. 
Result so far: 245080.28
Deduct 2472 from 2620 and we're left with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Going ahead to step 11:
1480 divided by 309 is 4 with a remainder of 244.
Write down 4 as next digit of the result. 
Result so far: 245080.284
Deduct 1236 from 1480 and we're left with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Advancing to step 12:
309 can be fit into 2440 7 times, resulting in a remainder of 277.
Use 7 as the next digit of our solution. 
Result so far: 245080.2847
Subtract 2163 from 2440 to get 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

Let's proceed to step 13:
If we divide 2770 by 309, we get 8 and a remainder of 298.
Write down 8 as next digit of the result. 
Result so far: 245080.28478
If we take 2472 away from 2770, we end up with 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Moving on to step 14:
The number 309 fits into 2980 9 times, leaving a remainder of 199.
Record the quotient 9 as the next digit in the result. 
Result so far: 245080.284789
Subtract 2781 from 2980 to get 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Advancing to step 15:
309 goes into 1990 6 times with a remainder of 136.
Put 6 as the next digit of the answer. 
Result so far: 245080.2847896
Deduct 1854 from 1990 and we're left with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Going ahead to step 16:
When dividing 1360 by 309, we get 4 with a remainder of 124.
Put 4 as the next digit of the answer. 
Result so far: 245080.28478964
If we subtract 1236 from 1360, we get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

In conclusion, the division gives 245080.28478964 with a balance of 1.24e-07.