The sum of 2.5 and 1.5 is multiplied by 4 and divided by 18. What is the result?
2.5与1.5的和乘以4，再除18，结果是多少？
<gadget id="calculator">2.5 + 1.5</gadget>
<output>4</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">18 / 16</gadget>
<output>9/8 = around 1.125</output>

<result>9/8 = around 1.125</result>