86243 ÷ 64 
Let's see how many times 64 fits into 86243.

Advancing to step 1:
The number 64 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 64

Going ahead to step 2:
64 can be fit into 86 1 times, resulting in a remainder of 22.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 64 from 86 to get 22.
Include the next digit (2) from the dividend after 22, then repeat: 222 / 64

Step 3:
64 can be fit into 222 3 times, resulting in a remainder of 30.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
The remainder is 30 after subtracting 192 from 222.
Take the next digit (4) from the dividend and append it to 30, then repeat: 304 / 64

On to step 4:
The number 64 fits into 304 4 times, leaving a remainder of 48.
The number 4 becomes the next digit in our result. 
Result so far: 134.0
If we take 256 away from 304, we end up with 48.
Fetch the next digit (3) from the dividend, attach it to 48 and continue: 483 / 64

Moving on to step 5:
If we divide 483 by 64, we get 7 and a remainder of 35.
Use 7 as the next digit of our solution. 
Result so far: 1347.0
Subtract 448 from 483 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 6:
64 goes into 350 5 times with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 1347.5
The remainder is 30 after subtracting 320 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 7:
64 goes into 300 4 times with a remainder of 44.
Write down 4 as next digit of the result. 
Result so far: 1347.54
If we subtract 256 from 300, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 8:
If we divide 440 by 64, we get 6 and a remainder of 56.
The next digit of our result is 6. 
Result so far: 1347.546
If we subtract 384 from 440, we 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.

Let's proceed to step 9:
64 can be fit into 560 8 times, resulting in a remainder of 48.
The next digit of our result is 8. 
Result so far: 1347.5468
If we take 512 away from 560, 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.

On to step 10:
480 divided by 64 is 7 with a remainder of 32.
The next digit of our result is 7. 
Result so far: 1347.54687
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.

On to step 11:
When dividing 320 by 64, we get 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 1347.546875
If we subtract 320 from 320, 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.

Step 12:
64 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1347.546875
If we subtract 0 from 0, 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.

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: 1347.546875
The remainder is 0 after subtracting 0 from 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 1347.546875, with a leftover of 0.0.