53857556 ÷ 663 
Our goal is to divide 53857556 by 663.

Let's proceed to step 1:
If we divide 5 by 663, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 663

On to step 2:
663 can be fit into 53 0 times, resulting in a remainder of 53.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 53 to get 53.
Append the next digit (8) from the dividend to 53 and continue with: 538 / 663

Advancing to step 3:
The number 663 fits into 538 0 times, leaving a remainder of 538.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 538 after subtracting 0 from 538.
Take the next digit (5) from the dividend and append it to 538, then repeat: 5385 / 663

Step 4:
663 goes into 5385 8 times with a remainder of 81.
The next digit of our result is 8. 
Result so far: 8.0
If we take 5304 away from 5385, we end up with 81.
Include the next digit (7) from the dividend after 81, then repeat: 817 / 663

Step 5:
If we divide 817 by 663, we get 1 and a remainder of 154.
Record the quotient 1 as the next digit in the result. 
Result so far: 81.0
If we subtract 663 from 817, we get 154.
Append the next digit (5) from the dividend to 154 and continue with: 1545 / 663

Step 6:
If we divide 1545 by 663, we get 2 and a remainder of 219.
The number 2 becomes the next digit in our result. 
Result so far: 812.0
Subtract 1326 from 1545 to get 219.
Take the next digit (5) from the dividend and append it to 219, then repeat: 2195 / 663

Going ahead to step 7:
When dividing 2195 by 663, we get 3 with a remainder of 206.
The next digit of our result is 3. 
Result so far: 8123.0
If we take 1989 away from 2195, we end up with 206.
Include the next digit (6) from the dividend after 206, then repeat: 2066 / 663

Step 8:
If we divide 2066 by 663, we get 3 and a remainder of 77.
The next digit of our result is 3. 
Result so far: 81233.0
If we subtract 1989 from 2066, we get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Moving on to step 9:
If we divide 770 by 663, we get 1 and a remainder of 107.
The next digit of our result is 1. 
Result so far: 81233.1
If we take 663 away from 770, we end up with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Moving on to step 10:
1070 divided by 663 is 1 with a remainder of 407.
The next digit of our result is 1. 
Result so far: 81233.11
Deduct 663 from 1070 and we're left with 407.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4070, and continue the process.

After the division, we end up with 81233.11 and a remainder of 0.407.