Where does the electricity of a house go?

A house has six appliances, each with its power and the hours it runs a day. You will make the program find each one's units in a $30$-day month, the total, and the appliance that uses the most. Then it draws them as bars.

The idea. Units (kWh) $=$ power in kW $\times$ hours a day $\times$ days.

Your tasks.

1. Inside the loop, work out units for one appliance in $30$ days.
2. Find total, the units for the whole house.
3. Find biggest, the name of the appliance that uses the most.