Students in class 31 origami cranes decorate the classroom. They need 15 strings of paper cranes, 16 in each string. How many cranes do they need to fold in total?
三1班同学折纸鹤布置教室，需要15串纸鹤，每串16只，一共需要折多少只？
<gadget id="calculator">16 * 15</gadget>
<output>240</output>

<result>240</result>