81801720 ÷ 447 
We want to divide 81801720 by 447.

Step 1:
The number 447 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 447

Advancing to step 2:
If we divide 81 by 447, we get 0 and a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Fetch the next digit (8) from the dividend, attach it to 81 and continue: 818 / 447

Advancing to step 3:
447 can be fit into 818 1 times, resulting in a remainder of 371.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 447 away from 818, we end up with 371.
Include the next digit (0) from the dividend after 371, then repeat: 3710 / 447

Going ahead to step 4:
3710 divided by 447 is 8 with a remainder of 134.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
Subtracting 3576 from 3710 leaves us with 134.
Fetch the next digit (1) from the dividend, attach it to 134 and continue: 1341 / 447

Step 5:
1341 divided by 447 is 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 183.0
If we take 1341 away from 1341, we end up with 0.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 447

On to step 6:
447 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 1830.0
If we subtract 0 from 7, we get 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 447

On to step 7:
447 can be fit into 72 0 times, resulting in a remainder of 72.
Use 0 as the next digit of our solution. 
Result so far: 18300.0
The remainder is 72 after subtracting 0 from 72.
Append the next digit (0) from the dividend to 72 and continue with: 720 / 447

Going ahead to step 8:
When dividing 720 by 447, we get 1 with a remainder of 273.
Write down 1 as next digit of the result. 
Result so far: 183001.0
If we take 447 away from 720, we end up with 273.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

Going ahead to step 9:
2730 divided by 447 is 6 with a remainder of 48.
The next digit of our result is 6. 
Result so far: 183001.6
Subtracting 2682 from 2730 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 10:
447 goes into 480 1 times with a remainder of 33.
Put 1 as the next digit of the answer. 
Result so far: 183001.61
Deduct 447 from 480 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 11:
The number 447 fits into 330 0 times, leaving a remainder of 330.
Record the quotient 0 as the next digit in the result. 
Result so far: 183001.61
The remainder is 330 after subtracting 0 from 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

On to step 12:
3300 divided by 447 is 7 with a remainder of 171.
Record the quotient 7 as the next digit in the result. 
Result so far: 183001.6107
If we take 3129 away from 3300, we end up with 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Going ahead to step 13:
447 goes into 1710 3 times with a remainder of 369.
Put 3 as the next digit of the answer. 
Result so far: 183001.61073
The remainder is 369 after subtracting 1341 from 1710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3690, and continue the process.

Let's proceed to step 14:
If we divide 3690 by 447, we get 8 and a remainder of 114.
Use 8 as the next digit of our solution. 
Result so far: 183001.610738
If we subtract 3576 from 3690, we get 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Advancing to step 15:
1140 divided by 447 is 2 with a remainder of 246.
Use 2 as the next digit of our solution. 
Result so far: 183001.6107382
The remainder is 246 after subtracting 894 from 1140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

On to step 16:
447 can be fit into 2460 5 times, resulting in a remainder of 225.
The number 5 becomes the next digit in our result. 
Result so far: 183001.61073825
If we subtract 2235 from 2460, we get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

After the division, we end up with 183001.61073825 and a remainder of 2.25e-07.