81665906 ÷ 128 
We want to figure out the number of times 81665906 can be divided by 128.

Advancing to step 1:
If we divide 8 by 128, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 128

On to step 2:
128 goes into 81 0 times with a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Grab the next digit (6) from the dividend, add it to 81, then carry on: 816 / 128

Moving on to step 3:
The number 128 fits into 816 6 times, leaving a remainder of 48.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 768 from 816 and we're left with 48.
Bring next digit (6) of the dividend behind the 48 and repeat the process: 486 / 128

Advancing to step 4:
486 divided by 128 is 3 with a remainder of 102.
Use 3 as the next digit of our solution. 
Result so far: 63.0
Deduct 384 from 486 and we're left with 102.
Bring next digit (5) of the dividend behind the 102 and repeat the process: 1025 / 128

Let's proceed to step 5:
128 can be fit into 1025 8 times, resulting in a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 638.0
Subtracting 1024 from 1025 leaves us with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 128

Advancing to step 6:
When dividing 19 by 128, we get 0 with a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 6380.0
Subtract 0 from 19 to get 19.
Grab the next digit (0) from the dividend, add it to 19, then carry on: 190 / 128

Going ahead to step 7:
If we divide 190 by 128, we get 1 and a remainder of 62.
The number 1 becomes the next digit in our result. 
Result so far: 63801.0
Deduct 128 from 190 and we're left with 62.
Fetch the next digit (6) from the dividend, attach it to 62 and continue: 626 / 128

Advancing to step 8:
128 goes into 626 4 times with a remainder of 114.
Record the quotient 4 as the next digit in the result. 
Result so far: 638014.0
The remainder is 114 after subtracting 512 from 626.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Step 9:
1140 divided by 128 is 8 with a remainder of 116.
The next digit of our result is 8. 
Result so far: 638014.8
Subtracting 1024 from 1140 leaves us with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Let's proceed to step 10:
The number 128 fits into 1160 9 times, leaving a remainder of 8.
Use 9 as the next digit of our solution. 
Result so far: 638014.89
Subtracting 1152 from 1160 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 11:
128 goes into 80 0 times with a remainder of 80.
The next digit of our result is 0. 
Result so far: 638014.89
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 12:
The number 128 fits into 800 6 times, leaving a remainder of 32.
Write down 6 as next digit of the result. 
Result so far: 638014.8906
If we take 768 away from 800, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 13:
128 can be fit into 320 2 times, resulting in a remainder of 64.
Put 2 as the next digit of the answer. 
Result so far: 638014.89062
If we subtract 256 from 320, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 14:
When dividing 640 by 128, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 638014.890625
The remainder is 0 after subtracting 640 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 15:
When dividing 0 by 128, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 638014.890625
Deduct 0 from 0 and we're left 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 16:
128 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 638014.890625
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.

The final result is 638014.890625 with a remainder of 0.0.