We're dividing 20533951 by 243 
We want to figure out the number of times 20533951 can be divided by 243.

Advancing to step 1:
243 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 243

Step 2:
243 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Grab the next digit (5) from the dividend, add it to 20, then carry on: 205 / 243

On to step 3:
When dividing 205 by 243, we get 0 with a remainder of 205.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 205, we get 205.
Fetch the next digit (3) from the dividend, attach it to 205 and continue: 2053 / 243

Advancing to step 4:
If we divide 2053 by 243, we get 8 and a remainder of 109.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 1944 from 2053 leaves us with 109.
Take the next digit (3) from the dividend and append it to 109, then repeat: 1093 / 243

Step 5:
The number 243 fits into 1093 4 times, leaving a remainder of 121.
The number 4 becomes the next digit in our result. 
Result so far: 84.0
If we take 972 away from 1093, we end up with 121.
Grab the next digit (9) from the dividend, add it to 121, then carry on: 1219 / 243

Going ahead to step 6:
243 can be fit into 1219 5 times, resulting in a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 845.0
Deduct 1215 from 1219 and we're left with 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 243

Let's proceed to step 7:
45 divided by 243 is 0 with a remainder of 45.
The number 0 becomes the next digit in our result. 
Result so far: 8450.0
Subtracting 0 from 45 leaves us with 45.
Take the next digit (1) from the dividend and append it to 45, then repeat: 451 / 243

Step 8:
When dividing 451 by 243, we get 1 with a remainder of 208.
Use 1 as the next digit of our solution. 
Result so far: 84501.0
If we subtract 243 from 451, we get 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Advancing to step 9:
If we divide 2080 by 243, we get 8 and a remainder of 136.
Record the quotient 8 as the next digit in the result. 
Result so far: 84501.8
Subtracting 1944 from 2080 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

On to step 10:
243 goes into 1360 5 times with a remainder of 145.
Put 5 as the next digit of the answer. 
Result so far: 84501.85
Subtracting 1215 from 1360 leaves us with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Step 11:
1450 divided by 243 is 5 with a remainder of 235.
Put 5 as the next digit of the answer. 
Result so far: 84501.855
If we subtract 1215 from 1450, we get 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

The final result is 84501.855 with a remainder of 0.0235.