Multiply the decimal by the whole number.<br><br>&bull; Multiply as if it were 345 × 7 = 2415<br>&bull; 3.45 has 2 decimal places, so place the decimal point 2 places from the right in the product<br>&bull; 2415 → 24.15<br>&bull; 3.45 × 7 = 24.15<br><br>Final Answer: 24.15