Divide :
`20.79 div9`

Answer

To solve the problem of dividing 20.79 by 9, we will follow these steps:

### Step 1: Set up the division
We are dividing 20.79 (the dividend) by 9 (the divisor). We can write this as:
\[ 20.79 \div 9 \]

### Step 2: Consider the first digit
The first digit of 20.79 is 2. Since 2 is smaller than 9, we cannot divide it. So, we move to the next digit and consider the first two digits, which is 20.

### Step 3: Divide the first two digits
Now we divide 20 by 9.
- 9 goes into 20 two times (because \(9 \times 2 = 18\)).
- Write down 2 in the quotient.

### Step 4: Subtract
Now, we subtract 18 from 20:
\[ 20 - 18 = 2 \]

### Step 5: Bring down the next digit
Next, we bring down the next digit from 20.79, which is 7. Now we have 27.

### Step 6: Divide 27 by 9
Now we divide 27 by 9.
- 9 goes into 27 three times (because \(9 \times 3 = 27\)).
- Write down 3 in the quotient next to 2.

### Step 7: Subtract again
Now, we subtract 27 from 27:
\[ 27 - 27 = 0 \]

### Step 8: Bring down the next digit
Now we bring down the next digit, which is 9. We now have 09 (or just 9).

### Step 9: Divide 9 by 9
Now we divide 9 by 9.
- 9 goes into 9 one time (because \(9 \times 1 = 9\)).
- Write down 1 in the quotient next to 23.

### Step 10: Final subtraction
Now we subtract 9 from 9:
\[ 9 - 9 = 0 \]

### Step 11: Write the final answer
Since there are no more digits to bring down, we can conclude that:
\[ 20.79 \div 9 = 2.31 \]

### Final Answer:
The result of dividing 20.79 by 9 is:
\[ \boxed{2.31} \]

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