
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
Juan also collects stamps from Italy and Germany, priced at $7$ cents and $3$ cents each, respectively. He organizes these European stamps similarly by decade. In the 50s and 60s, he collected 9 stamps from Italy and 15 from Germany. In the 70s and 80s, he collected 11 stamps from Italy and 8 from Germany. How much did his European stamps issued in the 50s and 60s cost him in total?

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