What is the sum of the reciprocal of (4/9) plus the product of 2.4 times (1/2)?
(4/9)的倒数，加上2.4乘(1/2)的积，和是多少？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">1 / (4/9)</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2.4 * (1/2)</gadget>
<output>1.2</output>

<gadget id="calculator">(9/4) + 1.2</gadget>
<output>3.45</output>

<result>3.45</result>