`3xx10^(5) + 4xx10^(3) + 7xx10^(2) + 5` is equal to

Options

A. 304705
B. 347500
C. 3004705
D. `3475xx10^(10)`

Answer

To solve the expression \(3 \times 10^5 + 4 \times 10^3 + 7 \times 10^2 + 5\), we will break it down step by step.

### Step 1: Calculate each term
1. **Calculate \(3 \times 10^5\)**:
\[ 3 \times 10^5 = 3 \times 100000 = 300000 \]

2. **Calculate \(4 \times 10^3\)**:
\[ 4 \times 10^3 = 4 \times 1000 = 4000 \]

3. **Calculate \(7 \times 10^2\)**:
\[ 7 \times 10^2 = 7 \times 100 = 700 \]

4. **The last term is simply \(5\)**.

### Step 2: Add the results from Step 1
Now, we will add all the calculated values together:
\[ 300000 + 4000 + 700 + 5 \]

### Step 3: Perform the addition
1. **Add \(300000 + 4000\)**:
\[ 300000 + 4000 = 304000 \]

2. **Add \(304000 + 700\)**:
\[ 304000 + 700 = 304700 \]

3. **Add \(304700 + 5\)**:
\[ 304700 + 5 = 304705 \]

### Final Result
Thus, the final result of the expression \(3 \times 10^5 + 4 \times 10^3 + 7 \times 10^2 + 5\) is:
\[ \boxed{304705} \]