30193869 ÷ 81 
We want to divide 30193869 by 81.

Moving on to step 1:
81 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 81

Step 2:
81 can be fit into 30 0 times, resulting in a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 30 leaves us with 30.
Grab the next digit (1) from the dividend, add it to 30, then carry on: 301 / 81

Step 3:
If we divide 301 by 81, we get 3 and a remainder of 58.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 243 from 301 to get 58.
Include the next digit (9) from the dividend after 58, then repeat: 589 / 81

Moving on to step 4:
The number 81 fits into 589 7 times, leaving a remainder of 22.
The next digit of our result is 7. 
Result so far: 37.0
Subtract 567 from 589 to get 22.
Bring next digit (3) of the dividend behind the 22 and repeat the process: 223 / 81

Advancing to step 5:
The number 81 fits into 223 2 times, leaving a remainder of 61.
The next digit of our result is 2. 
Result so far: 372.0
Deduct 162 from 223 and we're left with 61.
Fetch the next digit (8) from the dividend, attach it to 61 and continue: 618 / 81

On to step 6:
When dividing 618 by 81, we get 7 with a remainder of 51.
Put 7 as the next digit of the answer. 
Result so far: 3727.0
Deduct 567 from 618 and we're left with 51.
Append the next digit (6) from the dividend to 51 and continue with: 516 / 81

Moving on to step 7:
The number 81 fits into 516 6 times, leaving a remainder of 30.
The number 6 becomes the next digit in our result. 
Result so far: 37276.0
Deduct 486 from 516 and we're left with 30.
Grab the next digit (9) from the dividend, add it to 30, then carry on: 309 / 81

Step 8:
If we divide 309 by 81, we get 3 and a remainder of 66.
Write down 3 as next digit of the result. 
Result so far: 372763.0
Subtracting 243 from 309 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 9:
When dividing 660 by 81, we get 8 with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 372763.8
If we take 648 away from 660, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 10:
If we divide 120 by 81, we get 1 and a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 372763.81
Deduct 81 from 120 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 11:
81 can be fit into 390 4 times, resulting in a remainder of 66.
The next digit of our result is 4. 
Result so far: 372763.814
Subtract 324 from 390 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 12:
81 goes into 660 8 times with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 372763.8148
Subtracting 648 from 660 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 13:
The number 81 fits into 120 1 times, leaving a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 372763.81481
If we subtract 81 from 120, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Going ahead to step 14:
The number 81 fits into 390 4 times, leaving a remainder of 66.
Record the quotient 4 as the next digit in the result. 
Result so far: 372763.814814
Subtracting 324 from 390 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 15:
When dividing 660 by 81, we get 8 with a remainder of 12.
The next digit of our result is 8. 
Result so far: 372763.8148148
Subtract 648 from 660 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 16:
If we divide 120 by 81, we get 1 and a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 372763.81481481
Subtracting 81 from 120 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

The final outcome is 372763.81481481, with a leftover of 3.9e-08.