Kindergarten children eat watermelon together, each person can eat one watermelon (1/9), each group has 6 people. Now there are 4 watermelons, how many groups can eat enough?
幼儿园小朋友在一起吃西瓜，每个人能吃一个西瓜的(1/9)，每个小组有6人．现在又4个西瓜，可以够几个小组吃？
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(1/9) * 6</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">4 / (2/3)</gadget>
<output>6</output>

<result>6</result>