We're dividing 393866 by 48 
Let's see how many times 48 fits into 393866.

Moving on to step 1:
3 divided by 48 is 0 with 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.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 48

Step 2:
48 can be fit into 39 0 times, resulting in a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Take the next digit (3) from the dividend and append it to 39, then repeat: 393 / 48

Moving on to step 3:
393 divided by 48 is 8 with a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Deduct 384 from 393 and we're left with 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 48

Advancing to step 4:
When dividing 98 by 48, we get 2 with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 82.0
If we subtract 96 from 98, we get 2.
Append the next digit (6) from the dividend to 2 and continue with: 26 / 48

Step 5:
When dividing 26 by 48, we get 0 with a remainder of 26.
Use 0 as the next digit of our solution. 
Result so far: 820.0
If we take 0 away from 26, we end up with 26.
Include the next digit (6) from the dividend after 26, then repeat: 266 / 48

Moving on to step 6:
If we divide 266 by 48, we get 5 and a remainder of 26.
Use 5 as the next digit of our solution. 
Result so far: 8205.0
If we take 240 away from 266, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 7:
The number 48 fits into 260 5 times, leaving a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 8205.5
If we subtract 240 from 260, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
When dividing 200 by 48, we get 4 with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 8205.54
Deduct 192 from 200 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 9:
80 divided by 48 is 1 with a remainder of 32.
Put 1 as the next digit of the answer. 
Result so far: 8205.541
If we subtract 48 from 80, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 10:
If we divide 320 by 48, we get 6 and a remainder of 32.
The next digit of our result is 6. 
Result so far: 8205.5416
Deduct 288 from 320 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.

Going ahead to step 11:
If we divide 320 by 48, we get 6 and a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 8205.54166
Deduct 288 from 320 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.

The final result is 8205.54166 with a remainder of 3.2e-05.