
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Students from three interest groups in the seventh grade donated money to the Wenchuan earthquake disaster area on May 12th. The dance group donated a total of $x$ yuan, the art group donated $4$ times the amount of the dance group plus an additional $80$ yuan, and the soccer group donated $60$ yuan less than half of what the art group donated.  
(1) How much did these three groups donate in total? (Express your answer as an algebraic expression in terms of $x$ and simplify it)  
(2) How much did these three groups donate in total when $x=100$?

Present the answer in LaTex format: \boxed{Your answer}
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