We're dividing 77816945 by 64 
We want to figure out the number of times 77816945 can be divided by 64.

On to step 1:
64 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 64

Let's proceed to step 2:
When dividing 77 by 64, we get 1 with a remainder of 13.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 64 from 77 and we're left with 13.
Grab the next digit (8) from the dividend, add it to 13, then carry on: 138 / 64

On to step 3:
If we divide 138 by 64, we get 2 and a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 12.0
The remainder is 10 after subtracting 128 from 138.
Take the next digit (1) from the dividend and append it to 10, then repeat: 101 / 64

Moving on to step 4:
101 divided by 64 is 1 with a remainder of 37.
Write down 1 as next digit of the result. 
Result so far: 121.0
Subtract 64 from 101 to get 37.
Include the next digit (6) from the dividend after 37, then repeat: 376 / 64

Moving on to step 5:
The number 64 fits into 376 5 times, leaving a remainder of 56.
The next digit of our result is 5. 
Result so far: 1215.0
Subtracting 320 from 376 leaves us with 56.
Bring next digit (9) of the dividend behind the 56 and repeat the process: 569 / 64

Step 6:
If we divide 569 by 64, we get 8 and a remainder of 57.
The number 8 becomes the next digit in our result. 
Result so far: 12158.0
If we take 512 away from 569, we end up with 57.
Append the next digit (4) from the dividend to 57 and continue with: 574 / 64

On to step 7:
If we divide 574 by 64, we get 8 and a remainder of 62.
Put 8 as the next digit of the answer. 
Result so far: 121588.0
The remainder is 62 after subtracting 512 from 574.
Take the next digit (5) from the dividend and append it to 62, then repeat: 625 / 64

On to step 8:
64 can be fit into 625 9 times, resulting in a remainder of 49.
Use 9 as the next digit of our solution. 
Result so far: 1215889.0
If we subtract 576 from 625, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 9:
64 goes into 490 7 times with a remainder of 42.
Record the quotient 7 as the next digit in the result. 
Result so far: 1215889.7
The remainder is 42 after subtracting 448 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 10:
64 can be fit into 420 6 times, resulting in a remainder of 36.
Use 6 as the next digit of our solution. 
Result so far: 1215889.76
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.

Advancing to step 11:
64 can be fit into 360 5 times, resulting in a remainder of 40.
The number 5 becomes the next digit in our result. 
Result so far: 1215889.765
The remainder is 40 after subtracting 320 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 12:
400 divided by 64 is 6 with a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 1215889.7656
The remainder is 16 after subtracting 384 from 400.
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:
If we divide 160 by 64, we get 2 and a remainder of 32.
Write down 2 as next digit of the result. 
Result so far: 1215889.76562
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.

Going ahead to step 14:
320 divided by 64 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 1215889.765625
Subtracting 320 from 320 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:
0 divided by 64 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1215889.765625
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.

Advancing to step 16:
0 divided by 64 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1215889.765625
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 quotient of the division is 1215889.765625, and the remainder is 0.0.