73036853 ÷ 20 
Our goal is to divide 73036853 by 20.

Going ahead to step 1:
When dividing 7 by 20, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (3) from the dividend after 7, then repeat: 73 / 20

Moving on to step 2:
When dividing 73 by 20, we get 3 with a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 60 from 73 to get 13.
Include the next digit (0) from the dividend after 13, then repeat: 130 / 20

Let's proceed to step 3:
20 goes into 130 6 times with a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 36.0
Subtract 120 from 130 to get 10.
Take the next digit (3) from the dividend and append it to 10, then repeat: 103 / 20

Advancing to step 4:
20 can be fit into 103 5 times, resulting in a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 365.0
The remainder is 3 after subtracting 100 from 103.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 20

Let's proceed to step 5:
If we divide 36 by 20, we get 1 and a remainder of 16.
Write down 1 as next digit of the result. 
Result so far: 3651.0
If we subtract 20 from 36, we get 16.
Fetch the next digit (8) from the dividend, attach it to 16 and continue: 168 / 20

Advancing to step 6:
168 divided by 20 is 8 with a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 36518.0
Subtracting 160 from 168 leaves us with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 20

Advancing to step 7:
The number 20 fits into 85 4 times, leaving a remainder of 5.
Write down 4 as next digit of the result. 
Result so far: 365184.0
Subtract 80 from 85 to get 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 20

Let's proceed to step 8:
The number 20 fits into 53 2 times, leaving a remainder of 13.
Write down 2 as next digit of the result. 
Result so far: 3651842.0
If we take 40 away from 53, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 9:
When dividing 130 by 20, we get 6 with a remainder of 10.
The next digit of our result is 6. 
Result so far: 3651842.6
Subtracting 120 from 130 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
20 goes into 100 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 3651842.65
If we subtract 100 from 100, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 11:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 3651842.65
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 12:
0 divided by 20 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 3651842.65
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 3651842.65 with a remainder of 0.0.