81607431 ÷ 289 
Let's see how many times 289 fits into 81607431.

On to step 1:
8 divided by 289 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 289

Going ahead to step 2:
289 goes into 81 0 times with a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Include the next digit (6) from the dividend after 81, then repeat: 816 / 289

Going ahead to step 3:
816 divided by 289 is 2 with a remainder of 238.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 238 after subtracting 578 from 816.
Append the next digit (0) from the dividend to 238 and continue with: 2380 / 289

Going ahead to step 4:
If we divide 2380 by 289, we get 8 and a remainder of 68.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Subtracting 2312 from 2380 leaves us with 68.
Append the next digit (7) from the dividend to 68 and continue with: 687 / 289

Step 5:
289 can be fit into 687 2 times, resulting in a remainder of 109.
Put 2 as the next digit of the answer. 
Result so far: 282.0
Deduct 578 from 687 and we're left with 109.
Include the next digit (4) from the dividend after 109, then repeat: 1094 / 289

Step 6:
289 can be fit into 1094 3 times, resulting in a remainder of 227.
The next digit of our result is 3. 
Result so far: 2823.0
Subtract 867 from 1094 to get 227.
Append the next digit (3) from the dividend to 227 and continue with: 2273 / 289

On to step 7:
289 goes into 2273 7 times with a remainder of 250.
The next digit of our result is 7. 
Result so far: 28237.0
If we take 2023 away from 2273, we end up with 250.
Take the next digit (1) from the dividend and append it to 250, then repeat: 2501 / 289

Moving on to step 8:
2501 divided by 289 is 8 with a remainder of 189.
Use 8 as the next digit of our solution. 
Result so far: 282378.0
Subtracting 2312 from 2501 leaves us with 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Let's proceed to step 9:
When dividing 1890 by 289, we get 6 with a remainder of 156.
The next digit of our result is 6. 
Result so far: 282378.6
Deduct 1734 from 1890 and we're left with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Moving on to step 10:
1560 divided by 289 is 5 with a remainder of 115.
Write down 5 as next digit of the result. 
Result so far: 282378.65
If we subtract 1445 from 1560, we get 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Going ahead to step 11:
289 can be fit into 1150 3 times, resulting in a remainder of 283.
The number 3 becomes the next digit in our result. 
Result so far: 282378.653
Subtract 867 from 1150 to get 283.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2830, and continue the process.

Advancing to step 12:
If we divide 2830 by 289, we get 9 and a remainder of 229.
Write down 9 as next digit of the result. 
Result so far: 282378.6539
Subtracting 2601 from 2830 leaves us with 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

On to step 13:
If we divide 2290 by 289, we get 7 and a remainder of 267.
The next digit of our result is 7. 
Result so far: 282378.65397
The remainder is 267 after subtracting 2023 from 2290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Going ahead to step 14:
When dividing 2670 by 289, we get 9 with a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 282378.653979
The remainder is 69 after subtracting 2601 from 2670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Advancing to step 15:
The number 289 fits into 690 2 times, leaving a remainder of 112.
The number 2 becomes the next digit in our result. 
Result so far: 282378.6539792
Subtracting 578 from 690 leaves us with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Moving on to step 16:
The number 289 fits into 1120 3 times, leaving a remainder of 253.
Record the quotient 3 as the next digit in the result. 
Result so far: 282378.65397923
Deduct 867 from 1120 and we're left with 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

After the division, we end up with 282378.65397923 and a remainder of 2.53e-07.