If you worked it out again like a lot of cleaners who charge about £30 per ... well, you can do the maths yourself ...
You charge £30 per and you worked 4 hours a day (£30 x 4 = £120)
You work six days a week (6 x £120 = £720)
You work for 48 weeks a year (48 x £720 = £34,560)
you'll only make just under £35k a year ...
take off the costs, tax etc... and your only making about £10,000 a year - Plus You Have To Find MORE JOBS!