339966 ÷ 64 
We want to divide 339966 by 64.

Let's proceed to step 1:
64 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (3) from the dividend to 3 and continue with: 33 / 64

Advancing to step 2:
33 divided by 64 is 0 with a remainder of 33.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 33 and we're left with 33.
Append the next digit (9) from the dividend to 33 and continue with: 339 / 64

Moving on to step 3:
64 can be fit into 339 5 times, resulting in a remainder of 19.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we take 320 away from 339, we end up with 19.
Take the next digit (9) from the dividend and append it to 19, then repeat: 199 / 64

On to step 4:
199 divided by 64 is 3 with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 53.0
The remainder is 7 after subtracting 192 from 199.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 64

Moving on to step 5:
64 can be fit into 76 1 times, resulting in a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 531.0
Subtract 64 from 76 to get 12.
Include the next digit (6) from the dividend after 12, then repeat: 126 / 64

Advancing to step 6:
When dividing 126 by 64, we get 1 with a remainder of 62.
Put 1 as the next digit of the answer. 
Result so far: 5311.0
If we take 64 away from 126, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 7:
64 goes into 620 9 times with a remainder of 44.
Use 9 as the next digit of our solution. 
Result so far: 5311.9
The remainder is 44 after subtracting 576 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 8:
440 divided by 64 is 6 with a remainder of 56.
Write down 6 as next digit of the result. 
Result so far: 5311.96
Subtract 384 from 440 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 9:
If we divide 560 by 64, we get 8 and a remainder of 48.
Write down 8 as next digit of the result. 
Result so far: 5311.968
Deduct 512 from 560 and we're left 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 10:
64 goes into 480 7 times with a remainder of 32.
Record the quotient 7 as the next digit in the result. 
Result so far: 5311.9687
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.

Let's proceed to step 11:
64 can be fit into 320 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 5311.96875
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.

On to step 12:
64 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 5311.96875
Deduct 0 from 0 and we're left 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 13:
The number 64 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 5311.96875
Deduct 0 from 0 and we're left 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 5311.96875 and a remainder of 0.0.