The average of the three numbers is 60, and their ratio is 2:3:7. What is the largest of the three numbers?
三个数的平均数是60，它们的比是2：3：7，这三个数中最大的一个数是多少．
<gadget id="calculator">2 + 3 + 7</gadget>
<output>12</output>

<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">60 * 3 * (7/12)</gadget>
<output>105</output>

<result>105</result>