Xiaoli, Xiaohong, and Xiaofang went on a spring outing. Xiaoli bought 4 loaves of bread, and Xiaohong bought 5 loaves of bread. After the three of them ate on average, Xiaofang paid 2.7 yuan. How much should Xiaohong get back?
小丽、小红、小芳三人去春游，小丽买了4个面包，小红买了5个面包，三人平均吃了后，小芳付了2.7元，小红应收回多少元．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2.7 / (1/3)</gadget>
<output>8.1</output>

<gadget id="calculator">4 + 5</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">8.1 * (5/9)</gadget>
<output>4.5</output>

<gadget id="calculator">4.5 - 2.7</gadget>
<output>1.8</output>

<result>1.8</result>