Nala found 5 seashells at the beach. The next day, she found another 7, and the following day, she found twice the number she got from the first two days. How many seashells does Nala have?
On the first and second days, Nala found 5 + 7 = <<5+7=12>>12 seashells.
On the third day, she found 12 x 2 = <<12*2=24>>24 seashells.
Altogether, she found 12 + 24 = <<12+24=36>>36 seashells.
#### 36