66780602 divided by 64 
Our goal is to divide 66780602 by 64.

On to step 1:
If we divide 6 by 64, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 64

Let's proceed to step 2:
The number 64 fits into 66 1 times, leaving a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 64 from 66 to get 2.
Include the next digit (7) from the dividend after 2, then repeat: 27 / 64

Let's proceed to step 3:
If we divide 27 by 64, we get 0 and a remainder of 27.
The next digit of our result is 0. 
Result so far: 10.0
If we take 0 away from 27, we end up with 27.
Grab the next digit (8) from the dividend, add it to 27, then carry on: 278 / 64

Advancing to step 4:
The number 64 fits into 278 4 times, leaving a remainder of 22.
Put 4 as the next digit of the answer. 
Result so far: 104.0
If we take 256 away from 278, we end up with 22.
Append the next digit (0) from the dividend to 22 and continue with: 220 / 64

Moving on to step 5:
When dividing 220 by 64, we get 3 with a remainder of 28.
Use 3 as the next digit of our solution. 
Result so far: 1043.0
Subtracting 192 from 220 leaves us with 28.
Bring next digit (6) of the dividend behind the 28 and repeat the process: 286 / 64

On to step 6:
64 can be fit into 286 4 times, resulting in a remainder of 30.
Use 4 as the next digit of our solution. 
Result so far: 10434.0
If we subtract 256 from 286, we get 30.
Take the next digit (0) from the dividend and append it to 30, then repeat: 300 / 64

Moving on to step 7:
The number 64 fits into 300 4 times, leaving a remainder of 44.
Write down 4 as next digit of the result. 
Result so far: 104344.0
If we subtract 256 from 300, we get 44.
Append the next digit (2) from the dividend to 44 and continue with: 442 / 64

Step 8:
64 can be fit into 442 6 times, resulting in a remainder of 58.
Record the quotient 6 as the next digit in the result. 
Result so far: 1043446.0
If we subtract 384 from 442, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 9:
64 can be fit into 580 9 times, resulting in a remainder of 4.
The next digit of our result is 9. 
Result so far: 1043446.9
Subtract 576 from 580 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 10:
64 goes into 40 0 times with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 1043446.9
Deduct 0 from 40 and we're left 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.

Going ahead to step 11:
The number 64 fits into 400 6 times, leaving a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 1043446.906
If we subtract 384 from 400, we 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 12:
160 divided by 64 is 2 with a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 1043446.9062
The remainder is 32 after subtracting 128 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 13:
The number 64 fits into 320 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 1043446.90625
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.

Moving on to step 14:
64 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1043446.90625
Subtracting 0 from 0 leaves us 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.

Let's proceed to step 15:
64 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 1043446.90625
Subtracting 0 from 0 leaves us 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 1043446.90625 with a balance of 0.0.