To protect the environment, the fifth grade collected 76.8 kilograms of waste, 1.2 times that of the fourth grade. How many kilograms were collected by the two grades?
保护环境，五年级收集废品76.8千克，是四年级收集的1.2倍，两个年级一共收集了多少千克？
<gadget id="calculator">76.8 / 1.2</gadget>
<output>64</output>

<gadget id="calculator">64 + 76.8</gadget>
<output>140.8</output>

<result>140.8</result>