We look at the division of 300790 by 81 
We want to figure out the number of times 300790 can be divided by 81.

Advancing to step 1:
3 divided by 81 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 81

Step 2:
30 divided by 81 is 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Bring next digit (0) of the dividend behind the 30 and repeat the process: 300 / 81

Let's proceed to step 3:
The number 81 fits into 300 3 times, leaving a remainder of 57.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 243 from 300, we get 57.
Include the next digit (7) from the dividend after 57, then repeat: 577 / 81

Let's proceed to step 4:
81 can be fit into 577 7 times, resulting in a remainder of 10.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
If we take 567 away from 577, we end up with 10.
Take the next digit (9) from the dividend and append it to 10, then repeat: 109 / 81

Step 5:
81 can be fit into 109 1 times, resulting in a remainder of 28.
Use 1 as the next digit of our solution. 
Result so far: 371.0
Subtracting 81 from 109 leaves us with 28.
Include the next digit (0) from the dividend after 28, then repeat: 280 / 81

Step 6:
81 goes into 280 3 times with a remainder of 37.
Record the quotient 3 as the next digit in the result. 
Result so far: 3713.0
The remainder is 37 after subtracting 243 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 7:
When dividing 370 by 81, we get 4 with a remainder of 46.
Record the quotient 4 as the next digit in the result. 
Result so far: 3713.4
The remainder is 46 after subtracting 324 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 8:
The number 81 fits into 460 5 times, leaving a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 3713.45
If we take 405 away from 460, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 9:
81 can be fit into 550 6 times, resulting in a remainder of 64.
The next digit of our result is 6. 
Result so far: 3713.456
Deduct 486 from 550 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 10:
81 goes into 640 7 times with a remainder of 73.
Put 7 as the next digit of the answer. 
Result so far: 3713.4567
The remainder is 73 after subtracting 567 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Moving on to step 11:
81 can be fit into 730 9 times, resulting in a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 3713.45679
The remainder is 1 after subtracting 729 from 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 12:
10 divided by 81 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 3713.45679
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 13:
When dividing 100 by 81, we get 1 with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 3713.4567901
Subtracting 81 from 100 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 14:
190 divided by 81 is 2 with a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 3713.45679012
If we subtract 162 from 190, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final result is 3713.45679012 with a remainder of 2.8e-08.