19537978 divided by 243 
We want to divide 19537978 by 243.

Step 1:
1 divided by 243 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 243

Going ahead to step 2:
If we divide 19 by 243, we get 0 and a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 19 to get 19.
Bring next digit (5) of the dividend behind the 19 and repeat the process: 195 / 243

Advancing to step 3:
243 goes into 195 0 times with a remainder of 195.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 195 after subtracting 0 from 195.
Grab the next digit (3) from the dividend, add it to 195, then carry on: 1953 / 243

Let's proceed to step 4:
The number 243 fits into 1953 8 times, leaving a remainder of 9.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 1944 from 1953 leaves us with 9.
Grab the next digit (7) from the dividend, add it to 9, then carry on: 97 / 243

Let's proceed to step 5:
If we divide 97 by 243, we get 0 and a remainder of 97.
Write down 0 as next digit of the result. 
Result so far: 80.0
The remainder is 97 after subtracting 0 from 97.
Bring next digit (9) of the dividend behind the 97 and repeat the process: 979 / 243

Advancing to step 6:
If we divide 979 by 243, we get 4 and a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 804.0
The remainder is 7 after subtracting 972 from 979.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 243

Step 7:
The number 243 fits into 77 0 times, leaving a remainder of 77.
Use 0 as the next digit of our solution. 
Result so far: 8040.0
Deduct 0 from 77 and we're left with 77.
Include the next digit (8) from the dividend after 77, then repeat: 778 / 243

Let's proceed to step 8:
The number 243 fits into 778 3 times, leaving a remainder of 49.
Record the quotient 3 as the next digit in the result. 
Result so far: 80403.0
Subtracting 729 from 778 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 9:
243 can be fit into 490 2 times, resulting in a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 80403.2
Subtracting 486 from 490 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 10:
243 can be fit into 40 0 times, resulting in a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 80403.2
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 11:
243 goes into 400 1 times with a remainder of 157.
Write down 1 as next digit of the result. 
Result so far: 80403.201
Subtract 243 from 400 to get 157.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

On to step 12:
If we divide 1570 by 243, we get 6 and a remainder of 112.
Write down 6 as next digit of the result. 
Result so far: 80403.2016
If we take 1458 away from 1570, we end up with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

On to step 13:
The number 243 fits into 1120 4 times, leaving a remainder of 148.
The next digit of our result is 4. 
Result so far: 80403.20164
The remainder is 148 after subtracting 972 from 1120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Advancing to step 14:
When dividing 1480 by 243, we get 6 with a remainder of 22.
The next digit of our result is 6. 
Result so far: 80403.201646
The remainder is 22 after subtracting 1458 from 1480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 15:
220 divided by 243 is 0 with a remainder of 220.
The next digit of our result is 0. 
Result so far: 80403.201646
Deduct 0 from 220 and we're left with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 16:
243 can be fit into 2200 9 times, resulting in a remainder of 13.
Use 9 as the next digit of our solution. 
Result so far: 80403.20164609
The remainder is 13 after subtracting 2187 from 2200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The final outcome is 80403.20164609, with a leftover of 1.3e-08.