280639 ÷ 64 
We're looking to find how many times 64 goes into 280639.

On to step 1:
The number 64 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 64

Going ahead to step 2:
64 can be fit into 28 0 times, resulting in a remainder of 28.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 28 to get 28.
Fetch the next digit (0) from the dividend, attach it to 28 and continue: 280 / 64

Moving on to step 3:
64 can be fit into 280 4 times, resulting in a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 256 from 280 to get 24.
Grab the next digit (6) from the dividend, add it to 24, then carry on: 246 / 64

Going ahead to step 4:
64 can be fit into 246 3 times, resulting in a remainder of 54.
Put 3 as the next digit of the answer. 
Result so far: 43.0
If we subtract 192 from 246, we get 54.
Grab the next digit (3) from the dividend, add it to 54, then carry on: 543 / 64

Advancing to step 5:
If we divide 543 by 64, we get 8 and a remainder of 31.
Write down 8 as next digit of the result. 
Result so far: 438.0
Subtracting 512 from 543 leaves us with 31.
Grab the next digit (9) from the dividend, add it to 31, then carry on: 319 / 64

Let's proceed to step 6:
64 goes into 319 4 times with a remainder of 63.
The number 4 becomes the next digit in our result. 
Result so far: 4384.0
Subtracting 256 from 319 leaves us with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

On to step 7:
64 goes into 630 9 times with a remainder of 54.
The next digit of our result is 9. 
Result so far: 4384.9
If we subtract 576 from 630, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 8:
If we divide 540 by 64, we get 8 and a remainder of 28.
The next digit of our result is 8. 
Result so far: 4384.98
If we subtract 512 from 540, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 9:
64 can be fit into 280 4 times, resulting in a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 4384.984
Subtracting 256 from 280 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 10:
If we divide 240 by 64, we get 3 and a remainder of 48.
Write down 3 as next digit of the result. 
Result so far: 4384.9843
If we take 192 away from 240, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 11:
When dividing 480 by 64, we get 7 with a remainder of 32.
The number 7 becomes the next digit in our result. 
Result so far: 4384.98437
The remainder is 32 after subtracting 448 from 480.
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 12:
The number 64 fits into 320 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 4384.984375
Subtract 320 from 320 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.

On to step 13:
When dividing 0 by 64, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 4384.984375
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 14:
If we divide 0 by 64, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4384.984375
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 4384.984375 with a remainder of 0.0.