Susie earned $10 x 3 = $<<10*3=30>>30 per day.
Last week, she earned a total of $30 x 7 = $<<30*7=210>>210.
She spent $210 x 3/10 = $<<210*3/10=63>>63 on make-up.
While she spent $210 x 2/5 = $<<210*2/5=84>>84 on her skincare products.
Thus, she spent a total of $63 + $84 = $<<63+84=147>>147 from her earnings.
Therefore, Susie is left with $210 - $147 = $<<210-147=63>>63 from her earnings last week.
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