There are 50 oranges in a box, and 6 are randomly taken out and weighed. The weights are: 77 grams, 86 grams, 80 grams, 76 grams, 83 grams, and 78 grams. How many kilograms does this box of oranges weigh?
一箱橘子供50个，任意取出6个称一称，重量分别是：77克，86克，80克，76克，83克，78克．这箱橘子大约一共重多少千克？
<gadget id="calculator">77 + 86 + 80 + 76 + 83 + 78</gadget>
<output>480</output>

<gadget id="calculator">480 / 6</gadget>
<output>80</output>

<gadget id="calculator">50 / 1_000</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">80 * (1/20)</gadget>
<output>4</output>

<result>4</result>