What is the product of 7.6 plus 8.4 times 0.21 and multiplying by 1.5?
7.6加上8.4乘以0.21，所得的积乘1.5，积是多少？
<gadget id="calculator">7.6 + 8.4</gadget>
<output>16</output>

<gadget id="calculator">16 * 0.21 * 1.5</gadget>
<output>5.04</output>

<result>5.04</result>