53938394 ÷ 665 
Let's see how many times 665 fits into 53938394.

On to step 1:
5 divided by 665 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 665

Advancing to step 2:
53 divided by 665 is 0 with a remainder of 53.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 53, we end up with 53.
Grab the next digit (9) from the dividend, add it to 53, then carry on: 539 / 665

Moving on to step 3:
665 goes into 539 0 times with a remainder of 539.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 539, we end up with 539.
Take the next digit (3) from the dividend and append it to 539, then repeat: 5393 / 665

On to step 4:
5393 divided by 665 is 8 with a remainder of 73.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtracting 5320 from 5393 leaves us with 73.
Include the next digit (8) from the dividend after 73, then repeat: 738 / 665

On to step 5:
665 can be fit into 738 1 times, resulting in a remainder of 73.
Record the quotient 1 as the next digit in the result. 
Result so far: 81.0
If we take 665 away from 738, we end up with 73.
Include the next digit (3) from the dividend after 73, then repeat: 733 / 665

Step 6:
665 goes into 733 1 times with a remainder of 68.
The number 1 becomes the next digit in our result. 
Result so far: 811.0
Subtract 665 from 733 to get 68.
Grab the next digit (9) from the dividend, add it to 68, then carry on: 689 / 665

Let's proceed to step 7:
665 goes into 689 1 times with a remainder of 24.
The next digit of our result is 1. 
Result so far: 8111.0
Subtracting 665 from 689 leaves us with 24.
Append the next digit (4) from the dividend to 24 and continue with: 244 / 665

Let's proceed to step 8:
244 divided by 665 is 0 with a remainder of 244.
Put 0 as the next digit of the answer. 
Result so far: 81110.0
Deduct 0 from 244 and we're left with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Going ahead to step 9:
If we divide 2440 by 665, we get 3 and a remainder of 445.
Write down 3 as next digit of the result. 
Result so far: 81110.3
Deduct 1995 from 2440 and we're left with 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

Advancing to step 10:
665 can be fit into 4450 6 times, resulting in a remainder of 460.
Put 6 as the next digit of the answer. 
Result so far: 81110.36
The remainder is 460 after subtracting 3990 from 4450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Going ahead to step 11:
The number 665 fits into 4600 6 times, leaving a remainder of 610.
The next digit of our result is 6. 
Result so far: 81110.366
Subtract 3990 from 4600 to get 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

The final result is 81110.366 with a remainder of 0.061.