We're dividing 53880003 by 449 
We're looking to find how many times 449 goes into 53880003.

Let's proceed to step 1:
When dividing 5 by 449, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 449

On to step 2:
53 divided by 449 is 0 with a remainder of 53.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 53, we get 53.
Append the next digit (8) from the dividend to 53 and continue with: 538 / 449

Moving on to step 3:
If we divide 538 by 449, we get 1 and a remainder of 89.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 449 from 538 and we're left with 89.
Take the next digit (8) from the dividend and append it to 89, then repeat: 898 / 449

Step 4:
449 can be fit into 898 2 times, resulting in a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we subtract 898 from 898, we get 0.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 449

Advancing to step 5:
When dividing 0 by 449, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 120.0
If we take 0 away from 0, we end up with 0.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 449

On to step 6:
0 divided by 449 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1200.0
The remainder is 0 after subtracting 0 from 0.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 449

On to step 7:
449 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 12000.0
Subtracting 0 from 0 leaves us with 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 449

Step 8:
449 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 120000.0
Deduct 0 from 3 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 9:
449 goes into 30 0 times with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 120000.0
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 10:
The number 449 fits into 300 0 times, leaving a remainder of 300.
The next digit of our result is 0. 
Result so far: 120000.0
If we subtract 0 from 300, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Our division results in 120000.0 with a remaining 0.3.