81600593 ÷ 64 
Let's see how many times 64 fits into 81600593.

Going ahead to step 1:
If we divide 8 by 64, we get 0 and 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.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 64

Let's proceed to step 2:
When dividing 81 by 64, we get 1 with a remainder of 17.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 64 from 81 leaves us with 17.
Append the next digit (6) from the dividend to 17 and continue with: 176 / 64

On to step 3:
64 can be fit into 176 2 times, resulting in a remainder of 48.
The next digit of our result is 2. 
Result so far: 12.0
Deduct 128 from 176 and we're left with 48.
Bring next digit (0) of the dividend behind the 48 and repeat the process: 480 / 64

Step 4:
480 divided by 64 is 7 with a remainder of 32.
The number 7 becomes the next digit in our result. 
Result so far: 127.0
The remainder is 32 after subtracting 448 from 480.
Append the next digit (0) from the dividend to 32 and continue with: 320 / 64

Advancing to step 5:
320 divided by 64 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 1275.0
The remainder is 0 after subtracting 320 from 320.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 64

Going ahead to step 6:
If we divide 5 by 64, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 12750.0
Subtract 0 from 5 to get 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 64

Let's proceed to step 7:
59 divided by 64 is 0 with a remainder of 59.
The number 0 becomes the next digit in our result. 
Result so far: 127500.0
Deduct 0 from 59 and we're left with 59.
Take the next digit (3) from the dividend and append it to 59, then repeat: 593 / 64

Step 8:
If we divide 593 by 64, we get 9 and a remainder of 17.
Use 9 as the next digit of our solution. 
Result so far: 1275009.0
If we take 576 away from 593, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 9:
64 goes into 170 2 times with a remainder of 42.
Write down 2 as next digit of the result. 
Result so far: 1275009.2
If we subtract 128 from 170, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 10:
64 can be fit into 420 6 times, resulting in a remainder of 36.
Write down 6 as next digit of the result. 
Result so far: 1275009.26
The remainder is 36 after subtracting 384 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 11:
When dividing 360 by 64, we get 5 with a remainder of 40.
Record the quotient 5 as the next digit in the result. 
Result so far: 1275009.265
If we take 320 away from 360, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 12:
When dividing 400 by 64, we get 6 with a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 1275009.2656
Subtract 384 from 400 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 13:
64 can be fit into 160 2 times, resulting in a remainder of 32.
Put 2 as the next digit of the answer. 
Result so far: 1275009.26562
If we subtract 128 from 160, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 14:
320 divided by 64 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 1275009.265625
If we take 320 away from 320, 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.

On to step 15:
If we divide 0 by 64, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 1275009.265625
If we subtract 0 from 0, we 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 16:
The number 64 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1275009.265625
If we subtract 0 from 0, we 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.

In conclusion, the division gives 1275009.265625 with a balance of 0.0.