
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
A supermarket offers discounts to customers under the following conditions:  
(1) If the total purchase is less than 200 yuan, no discount is applied;  
(2) If the total purchase exceeds 200 yuan but does not exceed 500 yuan, a 10% discount is applied;  
(3) If the total purchase exceeds 500 yuan, the portion up to 500 yuan (inclusive) receives a 10% discount, and the portion exceeding 500 yuan receives a 20% discount.  
Xiao Li shopped at the supermarket twice, paying 198 yuan and 554 yuan respectively. Now, Xiao Zhang decides to buy all the items Xiao Li bought in those two trips in one go. How much does he need to pay?

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