On April 14, 2010, an earthquake occurred in Yushu County, Qinghai Province, my country. The teachers and students of Guangming Primary School held a donation activity of "giving love" to help the victims in the disaster area rebuild their homes as soon as possible. The first class of the fifth grade donated a total of 253.5 yuan, and the amount donated by the second class of the fifth grade was 1.2 times that of the first class. How much did the two classes donate in total?
2010年4月14日我国青海省玉树县发生地震，光明小学师生为帮助灾区灾民早日重建家园，举行"献爱心"捐款活动．五年级一班一共捐款253.5元，五年级二班捐的钱数是一班的1.2倍．两个班一共捐款多少元？
<gadget id="calculator">253.5 * 1.2</gadget>
<output>304.2</output>

<gadget id="calculator">304.2 + 253.5</gadget>
<output>557.7</output>

<result>557.7</result>