The number A is 28, which is the sum of the numbers B and C (4/11). What percentage is the number A of the average of these three numbers?
甲数是28，是乙、丙两数之和的(4/11)，甲数是这三个数的平均数的百分之几？
<gadget id="calculator">4 / 11</gadget>
<output>4/11 = around 0.363636</output>

<gadget id="calculator">28 / (4/11)</gadget>
<output>77</output>

<gadget id="calculator">77 + 28</gadget>
<output>105</output>

<gadget id="calculator">105 / 3</gadget>
<output>35</output>

<gadget id="calculator">28 / 35</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>