We divide 81720441 by 501
We want to figure out the number of times 81720441 can be divided by 501.

Advancing to step 1:
501 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
If we take 0 away from 8, we end up with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 501

Moving on to step 2:
If we divide 81 by 501, we get 0 and a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Grab the next digit (7) from the dividend, add it to 81, then carry on: 817 / 501

Let's proceed to step 3:
The number 501 fits into 817 1 times, leaving a remainder of 316.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 501 from 817, we get 316.
Append the next digit (2) from the dividend to 316 and continue with: 3162 / 501

Advancing to step 4:
The number 501 fits into 3162 6 times, leaving a remainder of 156.
Use 6 as the next digit of our solution. 
Result so far: 16.0
The remainder is 156 after subtracting 3006 from 3162.
Fetch the next digit (0) from the dividend, attach it to 156 and continue: 1560 / 501

Advancing to step 5:
If we divide 1560 by 501, we get 3 and a remainder of 57.
The next digit of our result is 3. 
Result so far: 163.0
Deduct 1503 from 1560 and we're left with 57.
Bring next digit (4) of the dividend behind the 57 and repeat the process: 574 / 501

Moving on to step 6:
When dividing 574 by 501, we get 1 with a remainder of 73.
The number 1 becomes the next digit in our result. 
Result so far: 1631.0
The remainder is 73 after subtracting 501 from 574.
Include the next digit (4) from the dividend after 73, then repeat: 734 / 501

Step 7:
When dividing 734 by 501, we get 1 with a remainder of 233.
The number 1 becomes the next digit in our result. 
Result so far: 16311.0
If we subtract 501 from 734, we get 233.
Take the next digit (1) from the dividend and append it to 233, then repeat: 2331 / 501

Moving on to step 8:
The number 501 fits into 2331 4 times, leaving a remainder of 327.
Put 4 as the next digit of the answer. 
Result so far: 163114.0
Deduct 2004 from 2331 and we're left with 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

Advancing to step 9:
501 can be fit into 3270 6 times, resulting in a remainder of 264.
The next digit of our result is 6. 
Result so far: 163114.6
If we subtract 3006 from 3270, we get 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Moving on to step 10:
2640 divided by 501 is 5 with a remainder of 135.
The number 5 becomes the next digit in our result. 
Result so far: 163114.65
Subtract 2505 from 2640 to get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Advancing to step 11:
The number 501 fits into 1350 2 times, leaving a remainder of 348.
Write down 2 as next digit of the result. 
Result so far: 163114.652
Subtract 1002 from 1350 to get 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

On to step 12:
The number 501 fits into 3480 6 times, leaving a remainder of 474.
Put 6 as the next digit of the answer. 
Result so far: 163114.6526
Subtracting 3006 from 3480 leaves us with 474.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4740, and continue the process.

Let's proceed to step 13:
The number 501 fits into 4740 9 times, leaving a remainder of 231.
The number 9 becomes the next digit in our result. 
Result so far: 163114.65269
Subtracting 4509 from 4740 leaves us with 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

On to step 14:
If we divide 2310 by 501, we get 4 and a remainder of 306.
Record the quotient 4 as the next digit in the result. 
Result so far: 163114.652694
If we subtract 2004 from 2310, we get 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Advancing to step 15:
The number 501 fits into 3060 6 times, leaving a remainder of 54.
Use 6 as the next digit of our solution. 
Result so far: 163114.6526946
Deduct 3006 from 3060 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 16:
If we divide 540 by 501, we get 1 and a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 163114.65269461
The remainder is 39 after subtracting 501 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

After the division, we end up with 163114.65269461 and a remainder of 3.9e-08.