To earn money for her new computer, Tina sells handmade postcards. In a day, she can make 30 such postcards. For each postcard sold, Tina gets $5. How much money did Tina earn if she managed to sell all the postcards she made every day for 6 days?
Tina made postcards for 6 days, so she has made 6 days * 30 postcards/day = <<6*30=180>>180 postcards.
For every postcard, Tina gets $5, so if she sold every card, she got 180 postcards * $5/postcard = $<<180*5=900>>900.
#### 900