`623.15-218.82-321.43=?`

Options

A. 89.2
B. 82.2
C. 89.9
D. None of these

Explanation

To solve the expression \( 623.15 - 218.82 - 321.43 \), we can follow these steps:

### Step 1: Subtract the first two numbers
We start by subtracting \( 218.82 \) from \( 623.15 \).

\[ 623.15 - 218.82 = 404.33 \]

### Step 2: Subtract the third number
Next, we take the result from Step 1 and subtract \( 321.43 \).

\[ 404.33 - 321.43 = 82.90 \]

### Final Answer
Thus, the value of \( 623.15 - 218.82 - 321.43 \) is:

\[ \boxed{82.90} \]

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