A watermelon weighing 4 kg is eaten by 7 people, what fraction of the melon does each person eat on average? How many grams do you eat?
一个重4千克的西瓜由7个人分吃，平均每个人吃这个瓜的几分之几？吃多少克？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 / (1/7)</gadget>
<output>7</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">(4/7) * 1_000</gadget>
<output>4_000/7 = around 571.428571</output>

<result>4_000/7 = around 571.428571</result>