
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 5 cents each, respectively. Italy and Germany are European countries. In his collection, Juan has the following number of stamps from the 50's and 60's:
- Italy: 50's - 5 stamps, 60's - 8 stamps
- Germany: 50's - 7 stamps, 60's - 6 stamps

Calculate the total cost of his European stamps from Italy and Germany issued before the 70's.

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