48637821 ÷ 243 
Our goal is to divide 48637821 by 243.

Going ahead to step 1:
The number 243 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 243

Moving on to step 2:
48 divided by 243 is 0 with a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 48 leaves us with 48.
Fetch the next digit (6) from the dividend, attach it to 48 and continue: 486 / 243

Let's proceed to step 3:
243 goes into 486 2 times with a remainder of 0.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 486 from 486, we get 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 243

Advancing to step 4:
When dividing 3 by 243, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Subtract 0 from 3 to get 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 243

Let's proceed to step 5:
243 goes into 37 0 times with a remainder of 37.
Write down 0 as next digit of the result. 
Result so far: 200.0
Deduct 0 from 37 and we're left with 37.
Take the next digit (8) from the dividend and append it to 37, then repeat: 378 / 243

On to step 6:
378 divided by 243 is 1 with a remainder of 135.
Use 1 as the next digit of our solution. 
Result so far: 2001.0
Deduct 243 from 378 and we're left with 135.
Fetch the next digit (2) from the dividend, attach it to 135 and continue: 1352 / 243

Step 7:
The number 243 fits into 1352 5 times, leaving a remainder of 137.
Use 5 as the next digit of our solution. 
Result so far: 20015.0
Subtract 1215 from 1352 to get 137.
Bring next digit (1) of the dividend behind the 137 and repeat the process: 1371 / 243

Advancing to step 8:
243 goes into 1371 5 times with a remainder of 156.
The next digit of our result is 5. 
Result so far: 200155.0
If we take 1215 away from 1371, we end up with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Moving on to step 9:
243 can be fit into 1560 6 times, resulting in a remainder of 102.
Record the quotient 6 as the next digit in the result. 
Result so far: 200155.6
The remainder is 102 after subtracting 1458 from 1560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Advancing to step 10:
The number 243 fits into 1020 4 times, leaving a remainder of 48.
Write down 4 as next digit of the result. 
Result so far: 200155.64
Subtracting 972 from 1020 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 11:
The number 243 fits into 480 1 times, leaving a remainder of 237.
Use 1 as the next digit of our solution. 
Result so far: 200155.641
If we subtract 243 from 480, we get 237.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2370, and continue the process.

Step 12:
When dividing 2370 by 243, we get 9 with a remainder of 183.
Record the quotient 9 as the next digit in the result. 
Result so far: 200155.6419
Subtracting 2187 from 2370 leaves us with 183.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1830, and continue the process.

On to step 13:
243 goes into 1830 7 times with a remainder of 129.
The next digit of our result is 7. 
Result so far: 200155.64197
The remainder is 129 after subtracting 1701 from 1830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Step 14:
When dividing 1290 by 243, we get 5 with a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 200155.641975
If we take 1215 away from 1290, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 15:
243 goes into 750 3 times with a remainder of 21.
Put 3 as the next digit of the answer. 
Result so far: 200155.6419753
If we take 729 away from 750, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 16:
243 goes into 210 0 times with a remainder of 210.
Use 0 as the next digit of our solution. 
Result so far: 200155.6419753
Subtract 0 from 210 to get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

The final outcome is 200155.6419753, with a leftover of 2.1e-07.