We look at the division of 54331288 by 393 
Our goal is to divide 54331288 by 393.

Moving on to step 1:
393 can be fit into 5 0 times, resulting in a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 393

Step 2:
If we divide 54 by 393, we get 0 and a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 54, we end up with 54.
Take the next digit (3) from the dividend and append it to 54, then repeat: 543 / 393

Step 3:
The number 393 fits into 543 1 times, leaving a remainder of 150.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 393 from 543 and we're left with 150.
Take the next digit (3) from the dividend and append it to 150, then repeat: 1503 / 393

Advancing to step 4:
When dividing 1503 by 393, we get 3 with a remainder of 324.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtracting 1179 from 1503 leaves us with 324.
Bring next digit (1) of the dividend behind the 324 and repeat the process: 3241 / 393

Advancing to step 5:
393 can be fit into 3241 8 times, resulting in a remainder of 97.
Put 8 as the next digit of the answer. 
Result so far: 138.0
Subtracting 3144 from 3241 leaves us with 97.
Fetch the next digit (2) from the dividend, attach it to 97 and continue: 972 / 393

Advancing to step 6:
The number 393 fits into 972 2 times, leaving a remainder of 186.
Put 2 as the next digit of the answer. 
Result so far: 1382.0
Subtract 786 from 972 to get 186.
Append the next digit (8) from the dividend to 186 and continue with: 1868 / 393

Step 7:
393 can be fit into 1868 4 times, resulting in a remainder of 296.
The number 4 becomes the next digit in our result. 
Result so far: 13824.0
If we take 1572 away from 1868, we end up with 296.
Append the next digit (8) from the dividend to 296 and continue with: 2968 / 393

Advancing to step 8:
If we divide 2968 by 393, we get 7 and a remainder of 217.
Use 7 as the next digit of our solution. 
Result so far: 138247.0
Deduct 2751 from 2968 and we're left with 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Advancing to step 9:
If we divide 2170 by 393, we get 5 and a remainder of 205.
Record the quotient 5 as the next digit in the result. 
Result so far: 138247.5
If we subtract 1965 from 2170, we get 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

On to step 10:
If we divide 2050 by 393, we get 5 and a remainder of 85.
Write down 5 as next digit of the result. 
Result so far: 138247.55
Deduct 1965 from 2050 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

The final outcome is 138247.55, with a leftover of 0.085.