We divide 5439 by 64
We want to figure out the number of times 5439 can be divided by 64.

Advancing to step 1:
The number 64 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 64

Moving on to step 2:
54 divided by 64 is 0 with a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Append the next digit (3) from the dividend to 54 and continue with: 543 / 64

Let's proceed to step 3:
543 divided by 64 is 8 with a remainder of 31.
The next digit of our result is 8. 
Result so far: 8.0
Deduct 512 from 543 and we're left with 31.
Append the next digit (9) from the dividend to 31 and continue with: 319 / 64

Going ahead to step 4:
The number 64 fits into 319 4 times, leaving a remainder of 63.
Use 4 as the next digit of our solution. 
Result so far: 84.0
If we subtract 256 from 319, we get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Let's proceed to step 5:
64 goes into 630 9 times with a remainder of 54.
The next digit of our result is 9. 
Result so far: 84.9
The remainder is 54 after subtracting 576 from 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 6:
540 divided by 64 is 8 with a remainder of 28.
Put 8 as the next digit of the answer. 
Result so far: 84.98
If we take 512 away from 540, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 7:
64 goes into 280 4 times with a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 84.984
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.

Advancing to step 8:
64 goes into 240 3 times with a remainder of 48.
Write down 3 as next digit of the result. 
Result so far: 84.9843
Subtracting 192 from 240 leaves us 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.

Advancing to step 9:
64 can be fit into 480 7 times, resulting in a remainder of 32.
The next digit of our result is 7. 
Result so far: 84.98437
Deduct 448 from 480 and we're left 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.

Step 10:
64 can be fit into 320 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 84.984375
The remainder is 0 after subtracting 320 from 320.
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 11:
64 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 84.984375
If we take 0 away from 0, 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 12:
64 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 84.984375
If we take 0 away from 0, 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.

The final outcome is 84.984375, with a leftover of 0.0.