The average of the three numbers is 40, and the ratio of the three numbers is 1:2:3. What is the largest of the three numbers?
三个数的平均数是40，三个数比是1：2：3，这三个数中最大的一个是多少．
<gadget id="calculator">40 * 3</gadget>
<output>120</output>

<gadget id="calculator">1 + 2 + 3</gadget>
<output>6</output>

<gadget id="calculator">3 / 6</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">120 * (1/2)</gadget>
<output>60</output>

<result>60</result>