81972544 divided by 64 
Our goal is to divide 81972544 by 64.

Going ahead to step 1:
64 goes into 8 0 times with 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 / 64

Going ahead to step 2:
If we divide 81 by 64, we get 1 and a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 64 from 81 leaves us with 17.
Take the next digit (9) from the dividend and append it to 17, then repeat: 179 / 64

Advancing to step 3:
If we divide 179 by 64, we get 2 and a remainder of 51.
Use 2 as the next digit of our solution. 
Result so far: 12.0
The remainder is 51 after subtracting 128 from 179.
Include the next digit (7) from the dividend after 51, then repeat: 517 / 64

Let's proceed to step 4:
64 can be fit into 517 8 times, resulting in a remainder of 5.
Put 8 as the next digit of the answer. 
Result so far: 128.0
Deduct 512 from 517 and we're left with 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 64

On to step 5:
52 divided by 64 is 0 with a remainder of 52.
Put 0 as the next digit of the answer. 
Result so far: 1280.0
Subtracting 0 from 52 leaves us with 52.
Grab the next digit (5) from the dividend, add it to 52, then carry on: 525 / 64

On to step 6:
If we divide 525 by 64, we get 8 and a remainder of 13.
Record the quotient 8 as the next digit in the result. 
Result so far: 12808.0
Subtracting 512 from 525 leaves us with 13.
Fetch the next digit (4) from the dividend, attach it to 13 and continue: 134 / 64

Step 7:
If we divide 134 by 64, we get 2 and a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 128082.0
If we subtract 128 from 134, we get 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 64

Moving on to step 8:
64 divided by 64 is 1 with a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 1280821.0
The remainder is 0 after subtracting 64 from 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
When dividing 0 by 64, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1280821.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
64 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1280821.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 1280821.0 with a balance of 0.0.