
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

This year, Ivan Petrovich registered as a self-employed individual and now decides how much time he will work every day. He excels in teaching fine arts to young schoolchildren and conducts group lessons with children at the community center. The cost of one lesson (60 minutes) of Ivan Petrovich is 3,000 rubles (after tax deductions). Besides income from teaching, he has a steady income from renting out property, which amounts to 14,000 rubles per month (after tax deductions). Ivan Petrovich completely dedicates his weekends to his family and does not work. He is very disciplined, carefully manages his time and income, and allocates his time the same way every working day. On working days, there are exactly 21 in each month, he sleeps eight hours a day, works for some time, spends time on his hobby of wood carving, and uses the remaining time for rest and house chores. He considers his hobby an essential part of his life, so if he works $L$ hours a day, he will definitely spend $2L$ hours carving wooden toys. He does not sell the wooden toys but gives them to friends and acquaintances. Additionally, Ivan Petrovich is an active philanthropist and donates money to a charitable fund. Every working day, he sets aside exactly $k/3$ thousand rubles for charity if he spent $k$ hours that day on rest and household chores. Ivan Petrovich spends 70,000 rubles a month on all living expenses, hobbies, and household management (excluding charity costs); he has no other expenses. He has already made provisions for "rainy days," setting aside a sum of money which he will not touch until such days arrive. Therefore, he entirely spends all the money he receives each month.

(a) How many lessons does Ivan Petrovich conduct daily?

(b) How much money does Ivan Petrovich donate to charity each month?

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