The total weight of students A, B, and C is 110 kg, and their weight ratio is 6:9:7. How many kilograms is the heaviest classmate?
甲、乙、丙三个同学体重总和是110千克，他们的体重比是6：9：7．最重的一个同学达多少千克？
<gadget id="calculator">6 + 9 + 7</gadget>
<output>22</output>

<gadget id="calculator">9 / 22</gadget>
<output>9/22 = around 0.409091</output>

<gadget id="calculator">110 * (9/22)</gadget>
<output>45</output>

<result>45</result>