A 45-square-meter exterior wall of Xiaoming’s house had peeled off and needed 1 kilogram of paint per square meter to be repainted. If the price of paint is 10 yuan per kilogram, how much will it cost to paint this wall?
小明家一面外墙45平方米大的墙皮脱落，要重新粉刷，每平方米需要用1千克涂料．如果涂料的价格是每千克10元，粉刷这面墙需要多少元？
<gadget id="calculator">45 * 1 * 10</gadget>
<output>450</output>

<result>450</result>