Solar panel to charge 12v deep cycle battery?

sup guys i am using a computer for about 3 hrs every night, it has a 400 watts power supply. I am also using a wood lathe which is has a 1\2 horse power motor for about 1hour of use. I want to use a solar panel to charge a 12 v battery (car or deep cycle battery, i have a use car battery as for now) so i would... show more sup guys i am using a computer for about 3 hrs every night, it has a 400 watts power supply. I am also using a wood lathe which is has a 1\2 horse power motor for about 1hour of use. I want to use a solar panel to charge a 12 v battery (car or deep cycle battery, i have a use car battery as for now) so i would like to know how much power solar panel i would need running all day to keep the battery charge so when i come home at night to use my computer for 3 hrs.also i would like to know if the car battery with a 400 watt inverter will keep the computer running for 3 hrs only and then its off and the panels can recharge the battery next day till i come home again.
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