The price of each children's tricycle is 90 yuan, and the kindergarten bought 5, how much did it cost?
儿童三轮车每辆的价钱是90元，幼儿园买了5辆，一共用了多少钱？
<gadget id="calculator">90 * 5</gadget>
<output>450</output>

<result>450</result>