
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

Determine how much money the Romanov family will save by using a multi-tariff meter over three years.

The cost of the meter is 3500 rubles. The installation cost is 1100 rubles. On average, the family's electricity consumption is 300 kWh per month, with 230 kWh used from 23:00 to 07:00.

Electricity rates with a multi-tariff meter: from 07:00 to 23:00 - 5.2 rubles per kWh, from 23:00 to 07:00 - 3.4 rubles per kWh.

Electricity rate with a standard meter: 4.6 rubles per kWh.

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