The area of a vegetable field is 4.5 hectares. Use (2/5) to grow cabbage and (1/5) to grow radishes. What is the total area for growing cabbage and radishes?
一块菜地的面积是4.5公顷，用它的(2/5)种白菜，用它的(1/5)种萝卜，种白菜和萝卜的面积一共是多少公顷？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(2/5) + (1/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4.5 * (3/5)</gadget>
<output>2.7</output>

<result>2.7</result>