We're dividing 51300448 by 242 
We want to figure out the number of times 51300448 can be divided by 242.

Step 1:
The number 242 fits into 5 0 times, leaving a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 242

On to step 2:
When dividing 51 by 242, we get 0 with a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Fetch the next digit (3) from the dividend, attach it to 51 and continue: 513 / 242

Moving on to step 3:
If we divide 513 by 242, we get 2 and a remainder of 29.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 29 after subtracting 484 from 513.
Append the next digit (0) from the dividend to 29 and continue with: 290 / 242

Going ahead to step 4:
290 divided by 242 is 1 with a remainder of 48.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
The remainder is 48 after subtracting 242 from 290.
Take the next digit (0) from the dividend and append it to 48, then repeat: 480 / 242

On to step 5:
The number 242 fits into 480 1 times, leaving a remainder of 238.
The next digit of our result is 1. 
Result so far: 211.0
Deduct 242 from 480 and we're left with 238.
Include the next digit (4) from the dividend after 238, then repeat: 2384 / 242

Let's proceed to step 6:
2384 divided by 242 is 9 with a remainder of 206.
Use 9 as the next digit of our solution. 
Result so far: 2119.0
Subtract 2178 from 2384 to get 206.
Grab the next digit (4) from the dividend, add it to 206, then carry on: 2064 / 242

Going ahead to step 7:
If we divide 2064 by 242, we get 8 and a remainder of 128.
Put 8 as the next digit of the answer. 
Result so far: 21198.0
If we take 1936 away from 2064, we end up with 128.
Take the next digit (8) from the dividend and append it to 128, then repeat: 1288 / 242

Step 8:
When dividing 1288 by 242, we get 5 with a remainder of 78.
The number 5 becomes the next digit in our result. 
Result so far: 211985.0
Subtracting 1210 from 1288 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Moving on to step 9:
242 can be fit into 780 3 times, resulting in a remainder of 54.
The number 3 becomes the next digit in our result. 
Result so far: 211985.3
Subtracting 726 from 780 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 10:
The number 242 fits into 540 2 times, leaving a remainder of 56.
Use 2 as the next digit of our solution. 
Result so far: 211985.32
The remainder is 56 after subtracting 484 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 11:
242 can be fit into 560 2 times, resulting in a remainder of 76.
The next digit of our result is 2. 
Result so far: 211985.322
Subtracting 484 from 560 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The final result is 211985.322 with a remainder of 0.0076.