We look at the division of 77226780 by 640 
Let's see how many times 640 fits into 77226780.

Let's proceed to step 1:
640 goes into 7 0 times with 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.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 640

Going ahead to step 2:
640 can be fit into 77 0 times, resulting in a remainder of 77.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 77 and we're left with 77.
Bring next digit (2) of the dividend behind the 77 and repeat the process: 772 / 640

Going ahead to step 3:
If we divide 772 by 640, we get 1 and a remainder of 132.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 640 from 772 to get 132.
Include the next digit (2) from the dividend after 132, then repeat: 1322 / 640

Advancing to step 4:
1322 divided by 640 is 2 with a remainder of 42.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we take 1280 away from 1322, we end up with 42.
Take the next digit (6) from the dividend and append it to 42, then repeat: 426 / 640

Going ahead to step 5:
426 divided by 640 is 0 with a remainder of 426.
Record the quotient 0 as the next digit in the result. 
Result so far: 120.0
Subtracting 0 from 426 leaves us with 426.
Append the next digit (7) from the dividend to 426 and continue with: 4267 / 640

Advancing to step 6:
4267 divided by 640 is 6 with a remainder of 427.
The number 6 becomes the next digit in our result. 
Result so far: 1206.0
Subtract 3840 from 4267 to get 427.
Grab the next digit (8) from the dividend, add it to 427, then carry on: 4278 / 640

On to step 7:
If we divide 4278 by 640, we get 6 and a remainder of 438.
The number 6 becomes the next digit in our result. 
Result so far: 12066.0
Subtracting 3840 from 4278 leaves us with 438.
Take the next digit (0) from the dividend and append it to 438, then repeat: 4380 / 640

Step 8:
640 goes into 4380 6 times with a remainder of 540.
The next digit of our result is 6. 
Result so far: 120666.0
If we take 3840 away from 4380, we end up with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Moving on to step 9:
640 can be fit into 5400 8 times, resulting in a remainder of 280.
Put 8 as the next digit of the answer. 
Result so far: 120666.8
Deduct 5120 from 5400 and we're left with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Advancing to step 10:
The number 640 fits into 2800 4 times, leaving a remainder of 240.
Write down 4 as next digit of the result. 
Result so far: 120666.84
Subtracting 2560 from 2800 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 11:
When dividing 2400 by 640, we get 3 with a remainder of 480.
Use 3 as the next digit of our solution. 
Result so far: 120666.843
If we take 1920 away from 2400, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Advancing to step 12:
640 goes into 4800 7 times with a remainder of 320.
Write down 7 as next digit of the result. 
Result so far: 120666.8437
If we subtract 4480 from 4800, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 13:
3200 divided by 640 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 120666.84375
If we subtract 3200 from 3200, 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.

Going ahead to step 14:
When dividing 0 by 640, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 120666.84375
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.

Step 15:
When dividing 0 by 640, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 120666.84375
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.

After the division, we end up with 120666.84375 and a remainder of 0.0.