It costs 4.5 yuan to buy 1.8kg of oranges. According to this calculation, how many kilograms can be bought for 7.7 yuan.
买1.8kg桔子需4.5元，照这样计算，7.7元可买多少kg．
<gadget id="calculator">4.5 / 1.8</gadget>
<output>2.5</output>

<gadget id="calculator">7.7 / 2.5</gadget>
<output>3.08</output>

<result>3.08</result>