Last year, Wang Lan's family harvested 390 kilograms of oranges. This year, their family harvested twice as many oranges as last year. If you put the oranges harvested this year in boxes, each box is 30 kg, how many boxes can you pack?
去年王兰家收桔子390千克，今年他们家收的桔子是去年的2倍．如果把今年收的桔子装在箱子中，每箱装30千克，可以装多少箱？
<gadget id="calculator">2 / 30</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">390 * (1/15)</gadget>
<output>26</output>

<result>26</result>