There are 15 students in the art club. By the end of each quarter, each student makes two artworks. If there are four quarters in a school year, how many artworks can the art club collect in two school years?
15 x 2 = 
<gadget id="calculator">15*2</gadget>
<output>30</output>
30 artworks can be collected in one quarter.
So in one school year, a total of 30 x 4 = 
<gadget id="calculator">30*4</gadget>
<output>120</output>
120 artworks can be collected.
Therefore, 120 x 2 = 
<gadget id="calculator">120*2</gadget>
<output>240</output>
240 artworks can be collected in two school years.

<result>240</result>